Different Types of Makeup Faces
A makeup face refers to a complete cosmetic application designed to enhance or transform facial features according to a specific aesthetic goal. Makeup is a powerful form of self-expression, artistry, and enhancement, widely used in daily life, fashion, photography, and entertainment. The type of makeup applied depends on the occasion, skin type, desired effect, and environment. Below is a detailed breakdown of the most common and influential types of makeup faces.
Natural
Designed to enhance features subtly, the natural makeup look aims for a fresh, "no-makeup" appearance that highlights one’s best attributes without appearing overdone.
Advantages
- Perfect for everyday wear
- Complements all skin tones and types
- Quick and easy to apply
- Enhances confidence without drawing attention
Limitations
- May not stand out in photos or under bright lighting
- Limited transformative effect
- Less suitable for formal or dramatic events
Best for: Work, school, daytime events, and minimalist beauty routines
Glam
Glamour makeup emphasizes bold features with richly pigmented products. It typically includes dramatic eye makeup, contoured cheeks, highlighted bone structure, and statement lips.
Advantages
- Creates a striking, polished appearance
- Ideal for evening events and celebrations
- Enhances facial definition and symmetry
- Photogenic and camera-ready
Limitations
- Time-consuming to apply
- Can feel heavy on the skin
- May require touch-ups throughout the day
Best for: Weddings, parties, red carpet events, and night-outs
Beauty (Corrective)
This technique focuses on enhancing facial symmetry and minimizing imperfections using color correction, contouring, and highlighting to align with conventional beauty standards.
Advantages
- Customizable for individual facial structures
- Used by professionals in fashion and film
- Boosts confidence through visual enhancement
- Can conceal blemishes, dark circles, and uneven tone
Limitations
- May promote unrealistic beauty ideals
- Requires skill and knowledge of facial anatomy
- Often involves multiple layers and products
Best for: Bridal makeup, modeling, film, and editorial work
High Fashion
An avant-garde and artistic form of makeup, high fashion makeup pushes creative boundaries with unconventional colors, textures, and techniques to create surreal or conceptual looks.
Advantages
- Encourages innovation and self-expression
- Central to runway shows and fashion editorials
- Blends makeup with art and performance
- Allows for bold experimentation
Limitations
- Not practical for daily wear
- May require special materials (glitter, prosthetics, etc.)
- Highly dependent on theme and context
Best for: Runway shows, fashion photography, art installations, and editorial shoots
Photographic
Tailored specifically for camera use, photographic makeup ensures the face appears balanced, radiant, and flawlessly defined under various lighting conditions and high-resolution lenses.
Advantages
- Prevents shine and flashback in photos
- Enhances features for optimal camera clarity
- Long-lasting and sweat-resistant formulas
- Customized for lighting (studio, natural, flash)
Limitations
- Can appear heavy in person if overdone
- Requires understanding of camera technology
- May need professional application
Best for: Weddings, commercials, magazine shoots, and social media content creation
| Type | Wearability | Application Time | Best For | Occasion Suitability |
|---|---|---|---|---|
| Natural | Very High | 5–10 minutes | Daily enhancement | Work, school, casual outings |
| Glam | Medium | 30–45 minutes | Evening elegance | Parties, weddings, events |
| Beauty (Corrective) | High | 20–40 minutes | Flawless finish | Bridal, film, modeling |
| High Fashion | Low | 45+ minutes | Artistic expression | Runways, editorials, art |
| Photographic | Medium | 30–60 minutes | Camera-ready look | Photoshoots, weddings, media |
Pro Tip: When applying photographic or glam makeup, always test your look under the same lighting conditions where it will be viewed. Natural daylight and camera flashes can dramatically alter how colors and finishes appear.
Composition and Ingredients of Makeup Foundation
Modern makeup foundations are complex formulations designed to enhance appearance while supporting skin health. These products combine a variety of functional ingredients to achieve desired texture, coverage, longevity, and skincare benefits. Understanding the core components helps consumers make informed choices based on skin type, sensitivity, and cosmetic goals.
Key Ingredients in Makeup Foundations
Water (Aqua)
Water is the primary ingredient in most liquid and cream foundations, often listed first on the ingredient label. It serves as a solvent that dissolves other components and helps create a lightweight, spreadable formula. Water also improves the product’s ability to blend seamlessly into the skin, enhancing comfort and wearability.
In addition to its functional role, water contributes to hydration, especially in moisturizing foundations. However, because water-based formulas are prone to microbial growth, they require effective preservatives to ensure safety and shelf stability.
Oils
Oils are essential in creating rich, creamy textures in foundations, particularly in formulations designed for dry or mature skin. They can be derived from minerals (e.g., mineral oil), plants (e.g., argan, jojoba, or coconut oil), or synthesized in labs (e.g., silicone oils like dimethicone).
Plant-based oils such as argan oil are prized for their nourishing properties, providing essential fatty acids and antioxidants that condition the skin. Silicone oils offer a silky feel and help the product spread evenly while minimizing the appearance of pores. The type and amount of oil used significantly affect the finish—ranging from dewy to matte.
Waxes
Waxes provide structure and stability in solid or compact makeup products, including pressed foundations, concealers, and lip products. Common plant-based waxes include candelilla wax and carnauba wax, both known for their firming and emulsifying properties.
These natural waxes help bind oil and pigment, prevent melting in warm conditions, and contribute to long-wear performance. In cream-to-powder formulas, waxes enable a smooth transition from wet to dry application, enhancing blendability and finish control.
Emollients
Emollients are ingredients that soften and smooth the skin by filling in tiny cracks and gaps in the outer layer. Common emollients in foundations include glycerin, squalane, and various esters.
Beyond improving texture, many emollients offer skincare benefits such as improved hydration, reduced flakiness, and enhanced barrier function. Some advanced formulations include anti-aging emollients like peptides or ceramides, which support skin elasticity and repair over time, making the foundation more than just a cosmetic cover.
Emulsifiers
Since oil and water naturally separate, emulsifiers are crucial for creating stable, homogeneous foundations. These surfactants—such as lecithin, polysorbates, or ceteareth compounds—allow oil and water phases to blend into a uniform mixture that doesn’t separate in the bottle or on the skin.
A well-emulsified foundation ensures consistent color payoff, smooth application, and longer wear. Poor emulsification can lead to patchiness, greasiness, or product breakdown during use.
Fragrance
Fragrance is added to many makeup products to enhance sensory appeal and create a more enjoyable user experience. While pleasant scents can elevate the perception of quality, fragrances are among the most common causes of skin irritation and allergic reactions.
For this reason, dermatologists often recommend fragrance-free or hypoallergenic foundations for sensitive, acne-prone, or reactive skin types. Many clean beauty brands now offer unscented formulations using natural alternatives like essential oils in minimal, non-irritating concentrations.
Colorants (Pigments & Dyes)
Colorants provide the foundation with its shade and coverage level. They come in two main types: pigments (insoluble particles that provide opacity) and dyes (soluble compounds that add transparent color).
Iron oxides are the most widely used pigments, offering natural-looking red, yellow, brown, and black tones essential for matching diverse skin tones. Titanium dioxide provides white opacity and is often used to lighten shades or add sun protection. Ultramarines and micas are used for subtle shimmer and color correction. The precision of pigment blending determines how well a foundation mimics real skin texture and tone.
Preservatives
Preservatives are vital for preventing microbial contamination in water-containing products. Common preservatives include parabens, phenoxyethanol, and benzyl alcohol. They inhibit the growth of bacteria, mold, and yeast—especially important since makeup is frequently applied with fingers or reusable tools.
While some consumers avoid parabens due to health concerns, scientific studies have shown them to be safe at approved concentrations. For those seeking alternatives, many brands now use paraben-free preservation systems that combine multiple mild agents for effective protection without compromising safety.
Sunscreen Agents
Many daily-use foundations include SPF (Sun Protection Factor) to shield skin from harmful UVA and UVB rays. Common sunscreen ingredients include chemical filters like avobenzone and physical blockers like zinc oxide or titanium dioxide.
While SPF in makeup offers added protection, it’s usually not sufficient on its own—most experts recommend applying a dedicated sunscreen underneath for adequate coverage. Still, SPF-infused foundations encourage sun-safe habits and are especially beneficial for those who wear makeup regularly.
| Ingredient | Primary Function | Common Examples |
|---|---|---|
| Water | Solvent, texture modifier, hydrator | Aqua, purified water |
| Oils | Moisturize, improve spreadability | Argan oil, mineral oil, dimethicone |
| Waxes | Structure, stability, thickening | Carnauba wax, candelilla wax |
| Emollients | Smooth skin, lock in moisture | Glycerin, squalane, ceramides |
| Emulsifiers | Bind oil and water | Lecithin, ceteareth-20 |
| Fragrance | Enhance sensory experience | Parfum, essential oils, fragrance-free |
| Colorants | Provide color and coverage | Iron oxides, titanium dioxide, mica |
| Preservatives | Prevent microbial growth | Parabens, phenoxyethanol, benzyl alcohol |
| Sunscreen | UV protection | Zinc oxide, avobenzone, titanium dioxide |
Choosing the Right Foundation for Your Skin
Important: Always patch-test new makeup products before full application, especially if you have sensitive or reactive skin. Check ingredient labels for known allergens and avoid sharing makeup to reduce contamination risks. Proper storage—away from heat and sunlight—helps maintain product integrity and effectiveness.
How to Choose the Right Makeup for Your Face
Selecting the perfect makeup is more than just picking a pretty shade—it's about understanding your skin, lifestyle, and personal goals. The right makeup enhances your natural beauty, feels comfortable throughout the day, and supports your skin health. Here’s a comprehensive guide to help you make informed, personalized choices.
Skin Type
Your skin type is the foundation of any successful makeup routine. Choosing products that align with your skin’s needs ensures a flawless finish and prevents irritation or breakouts.
- Dry skin: Opt for hydrating foundations and creamy formulas enriched with emollients like argan oil from Morocco, hyaluronic acid, or shea butter to prevent flakiness.
- Oily skin: Choose oil-free, non-comedogenic, and matte-finish products that control shine and minimize pore clogging.
- Combination skin: Use a balanced approach—lightweight, buildable coverage that won’t dry out cheeks or exacerbate oiliness in the T-zone.
- Sensitive skin: Stick to fragrance-free, hypoallergenic, and dermatologist-tested brands to reduce the risk of redness or allergic reactions.
Pro tip: Always patch-test new products behind the ear or on the jawline before full application.
Skin Undertone & Foundation Matching
Finding the right foundation shade goes beyond surface color—it hinges on your skin’s undertone, which can be warm, cool, or neutral.
- Warm undertones: Look for foundations with yellow, golden, or peachy bases. Veins on your wrist may appear greenish.
- Cool undertones: Seek pink, red, or bluish-based shades. Your veins likely appear blue or purple.
- Neutral undertones: Your skin has a mix of warm and cool characteristics and can wear a broader range of shades.
- Testing tip: Swatch foundation on your jawline in natural light to ensure seamless blending with your neck and face.
Nakeup offers skincare-infused makeup and tailored solutions designed for diverse skin types and undertones, helping you achieve a radiant, even base that looks natural and feels nourishing.
Occasion & Makeup Intensity
The event you're attending should guide the intensity and style of your makeup.
- Daily wear: A natural, “no-makeup” look with tinted moisturizer, concealer, and subtle eye definition is ideal for work or casual outings.
- Evening events: Amp up the drama with bold eyeliner, smoky eyes, or a vibrant lip for cocktails or parties.
- Weddings or photoshoots: Use long-wearing, camera-ready formulas with setting sprays to ensure your look stays flawless under lights and flash.
- Outdoor activities: Waterproof and sweat-resistant products are essential for beach days or sports.
Key insight: Less is often more—enhance your features without masking them.
Lifestyle & Practicality
Your daily routine plays a major role in determining the best makeup for you.
- Busy professionals: Prioritize multi-tasking products like tinted lip balms, CC creams, and long-wear foundations (12+ hour claims).
- Minimalist routines: Choose easy-to-apply, blendable products that require few steps and tools.
- Frequent travelers: Pack lightweight, TSA-friendly kits with versatile shades and minimal packaging.
- Active lifestyles: Look for transfer-proof, humidity-resistant, and non-patchy formulas that withstand movement and sweat.
Smart choice: Build a capsule makeup collection tailored to your most common daily needs.
Trends vs. Personal Style
While makeup trends can be fun and inspiring, they shouldn’t override what suits your unique facial features and personality.
- Experiment with trend elements—like graphic eyeliner or bold brows—but adapt them to complement your face shape and eye color.
- Identify your signature look (e.g., red lip, glowing skin) and use trends to refresh, not replace, your style.
- Avoid drastic changes based on social media if they don’t align with your comfort or skin type.
- Follow influencers with similar skin tones and features for relatable inspiration.
Golden rule: Confidence comes from feeling like the best version of yourself—not from copying someone else.
Quality vs. Price
While budget-friendly options exist, investing in quality makeup often pays off in performance, safety, and skin health.
- High-quality products typically contain better pigments, smoother textures, and skin-friendly ingredients.
- Cheap makeup may contain fillers, allergens, or low-grade dyes that cause breakouts or uneven application.
- Mid-range and premium brands often offer superior blendability, longevity, and photogenic results.
- Look for clean beauty certifications, dermatological testing, and transparent ingredient lists.
Wise investment: Allocate budget to essentials like foundation, concealer, and sunscreen-infused products—they make the biggest impact.
Professional Recommendation: Start with a skincare-first approach. Well-moisturized, exfoliated skin provides the best canvas for makeup. Use color-correcting primers to neutralize imperfections before foundation, and always remove makeup thoroughly at night. When in doubt, consult a beauty advisor or use virtual try-on tools from trusted brands like Nakeup to test shades and finishes digitally.
| Skin Type | Recommended Foundation Type | Key Ingredients to Look For | Top Product Tips |
|---|---|---|---|
| Dry | Cream or hydrating liquid | Argan oil, hyaluronic acid, glycerin | Apply with a damp sponge for dewy finish |
| Oily | Matte, oil-free liquid or powder | Niacinamide, salicylic acid, silica | Use a primer to extend wear and control shine |
| Combination | Lightweight, buildable formula | Hyaluronic acid, ceramides, green tea extract | Spot-apply matte products only where needed |
| Sensitive | Mineral or hypoallergenic | Zinc oxide, titanium dioxide, aloe vera | Avoid alcohol, fragrance, and parabens |
Additional Considerations
- Sun Protection: Choose foundations or tinted moisturizers with SPF 30+ to protect skin from UV damage.
- Shelf Life: Replace liquid products every 6–12 months and powders every 1–2 years to avoid bacterial growth.
- Tool Hygiene: Clean brushes and sponges weekly to prevent breakouts and maintain application quality.
- Inclusivity: Support brands that offer wide shade ranges and cater to diverse skin tones and types.
- Skin Health: Avoid heavy, occlusive makeup daily; allow skin to breathe and recover regularly.
The Art of Makeup Application and Skin Care Regulation
Makeup is more than just cosmetic enhancement—it's a powerful form of self-expression and confidence-building for many women. When applied correctly, makeup can accentuate natural beauty, balance facial features, and create a polished appearance. However, improper application or neglecting skincare routines can lead to clogged pores, breakouts, premature aging, and uneven texture. To ensure both aesthetic success and skin health, understanding proper makeup techniques and regulatory practices is essential.
Skin Safety Note: Always perform a patch test before using new makeup products. Avoid sharing makeup tools to prevent bacterial infections. Never sleep with makeup on—residual product can trap dirt and oil, leading to inflammation and acne.
Essential Makeup Application Techniques
Mastering professional-grade makeup starts with understanding key techniques that promote a flawless, long-lasting, and natural-looking finish. Below are six fundamental methods every makeup enthusiast should know:
- Layering Technique: Build Coverage Gradually
Instead of applying thick, heavy coats of foundation, the layering technique emphasizes building coverage in thin, translucent layers. This approach prevents a "cakey" appearance while allowing you to customize coverage based on occasion and skin condition.
- Begin with a tinted moisturizer or light-coverage foundation for everyday wear
- Add a second layer only to areas needing extra coverage (e.g., redness, blemishes)
- Use sheer blush and transparent eyeshadows to maintain a fresh, radiant look
- Apply products with sponges or brushes using a stippling motion for even distribution
- Blending Technique: Achieve a Seamless Finish
Blending is the cornerstone of natural-looking makeup. It ensures smooth transitions between colors and eliminates harsh lines, especially around the jawline, hairline, and eyes.
- Use clean, high-quality brushes or damp beauty sponges for optimal blending
- Blend foundation outward from the center of the face to avoid visible edges
- For eyeshadow, use transition shades and blend in circular motions at the crease
- Always blend contour and blush into the skin so they appear as if they're part of your natural flush
- Contouring and Highlighting: Sculpt and Illuminate Facial Features
These techniques use light and shadow to enhance bone structure, creating dimension and definition. When done correctly, contouring can slim the face, lift cheekbones, and sharpen the jawline.
- Choose cream products for a dewy finish or powders for a matte look
- Contour along the hollows of the cheeks, sides of the nose, and jawline using a shade 1–2 tones darker than your skin
- Highlight the high points of the face—top of cheekbones, brow bones, bridge of the nose, and cupid’s bow
- Blend thoroughly to avoid streaks and ensure a soft, airbrushed effect
- Setting Products: Lock in Your Look All Day
Setting your makeup is crucial for longevity, especially in humid conditions or during long events. This step prevents smudging, fading, and excess shine.
- Use translucent setting powder to mattify oily areas (T-zone) without adding color
- Apply setting spray after completing your makeup to fuse layers together
- For extra hold, try the "baking" technique—apply loose powder under the eyes and let it sit before dusting off
- Opt for alcohol-free, hydrating sprays if you have dry or sensitive skin
- Touch-Ups: Maintain Freshness Throughout the Day
Even the best makeup fades over time. Strategic touch-ups keep your look vibrant and camera-ready from morning to night.
- Carry a compact mirror, blotting papers, and a small makeup kit with essentials
- Reapply foundation or concealer only where needed—avoid layering too much product
- Refresh lips with lipstick or gloss; use a lip liner to prevent feathering
- Blot excess oil before reapplying powder to avoid buildup
- Makeup Removal: Protect Your Skin Barrier
Removing makeup properly is just as important as applying it. Overnight residue can lead to clogged pores, irritation, and accelerated skin aging.
- Start with an oil-based or micellar cleanser to dissolve waterproof makeup
- Follow with a gentle facial cleanser to remove remaining impurities
- Use reusable cotton pads or soft cloths to minimize waste and skin friction
- Moisturize immediately after cleansing to restore hydration and support the skin barrier
| Technique | Primary Benefit | Best For | Recommended Tools |
|---|---|---|---|
| Layering | Customizable coverage without heaviness | Daily wear, mature or dry skin | Sponge, stippling brush, light foundation |
| Blending | Natural, seamless finish | All skin types and occasions | Beauty blender, blending brushes |
| Contouring & Highlighting | Facial definition and dimension | Photography, events, evening looks | Angled brushes, cream/powder kits |
| Setting | Long-lasting wear and shine control | Oily skin, hot climates, long days | Translucent powder, setting spray |
| Touch-Ups | Sustained appearance throughout the day | Workdays, travel, special events | Blotting papers, travel-sized products |
| Removal | Prevents breakouts and skin damage | All users, especially acne-prone skin | Micellar water, double cleanser, soft cloth |
Pro Tip: Incorporate a weekly deep-cleaning routine for your makeup brushes and sponges. Dirty tools harbor bacteria and can cause breakouts. Wash them with a gentle brush cleanser or baby shampoo and allow them to air dry completely before reuse.
Additional Skincare and Makeup Best Practices
- Always prep your skin with moisturizer and primer before applying makeup
- Choose non-comedogenic, dermatologist-tested products if you have sensitive or acne-prone skin
- Replace mascara every 3–4 months and eyeliners every 6 months to avoid infections
- Store makeup in a cool, dry place away from direct sunlight to preserve integrity
- Listen to your skin—take makeup-free days to let your pores breathe and recover
- Stay hydrated and maintain a healthy diet to support radiant skin from within
Remember, makeup should enhance—not mask—your natural beauty. By combining skillful application techniques with responsible skincare habits, you can enjoy a flawless look while keeping your skin healthy and resilient. Whether you're preparing for a special event or perfecting your daily routine, these principles will help you achieve professional results with confidence.
Frequently Asked Questions About Makeup & Skincare
Q1: Do nakeup products contain preservatives?A1: Yes, most nakeup products contain preservatives such as parabens, phenoxyethanol, or benzyl alcohol to prevent microbial contamination like bacteria and mold. These ingredients are essential for maintaining product safety and extending shelf life, especially in formulations exposed to moisture and air during use.
- Common Preservatives: Methylparaben, propylparaben, sodium benzoate, and potassium sorbate are widely used in cosmetic products.
- Shelf Life Impact: Proper preservation can extend a product’s usability to 12–36 months, depending on the formula and storage conditions.
- Sensitive Skin Considerations: Some individuals may prefer paraben-free or preservative-free alternatives, though these often require refrigeration and have shorter lifespans.
Always store your nakeup products in a cool, dry place and follow expiration guidelines (PAO – Period After Opening) printed on the packaging to ensure safety and effectiveness.
Q2: Are makeup products with SPF necessary?A2: Yes, incorporating SPF into daily makeup is highly recommended for protecting your skin from harmful ultraviolet (UV) radiation. Daily exposure to UVA and UVB rays—even on cloudy days or indoors near windows—can lead to premature aging, sunspots, and increased risk of skin cancer.
- Daily Protection: A foundation or BB cream with at least SPF 30 provides a convenient first layer of defense, especially when reapplying sunscreen throughout the day isn't feasible.
- Limitations: Most makeup products don’t offer enough coverage (thickness or amount applied) to achieve the full labeled SPF. Therefore, they should complement—not replace—a dedicated sunscreen.
- Best Practice: Apply a broad-spectrum facial sunscreen as your base layer, then follow with SPF-infused makeup for enhanced protection, particularly during prolonged sun exposure or summer months.
For optimal results, pair SPF makeup with other sun-safe habits like wearing hats, seeking shade, and avoiding peak sun hours.
Q3: What is photographic makeup?A3: Photographic makeup is specially designed to look flawless under camera lighting and high-resolution lenses, which can exaggerate imperfections, shine, and uneven tones. Unlike everyday makeup, it emphasizes longevity, coverage, and precision to ensure a polished appearance in photos.
- Key Components: A full-coverage, long-wearing foundation evens out skin tone and minimizes discoloration. Setting powders or sprays control shine and prevent flash photography glare (commonly known as “flashback”).
- Enhanced Features: Bolder eye makeup, defined brows, and slightly exaggerated blush or contouring help features stand out without appearing overdone on camera.
- Lighting Adaptation: Makeup artists adjust formulas based on lighting—matte finishes for bright lights, dewy looks for soft lighting, and specialized color correction to counteract harsh shadows or color casts.
This type of makeup is essential for weddings, professional portraits, film, and social media content creation, where image quality demands perfection.
Q4: How should makeup be properly removed?A4: Proper makeup removal is crucial for maintaining healthy skin and preventing clogged pores, breakouts, and irritation. The process should be thorough yet gentle to preserve the skin’s natural barrier.
- Step 1 – Double Cleansing: Start with an oil-based cleanser or micellar water to dissolve waterproof makeup, sunscreen, and sebum. Follow with a water-based cleanser to remove residual impurities.
- Recommended Products: Micellar water (ideal for sensitive skin), cleansing oils (effective for heavy makeup), and pre-moistened wipes (convenient but best used occasionally, as some may contain alcohols or fragrances).
- Technique: Use soft, upward motions and avoid harsh rubbing. Pay special attention to areas like the lash line, brows, and hairline where makeup tends to accumulate.
- Post-Cleansing: Finish with toner and moisturizer to restore pH balance and hydration.
Skipping makeup removal—even when tired—can lead to acne, dullness, and accelerated aging. Make it a non-negotiable part of your nightly skincare routine.
Q5: Are nakeup products vegan-friendly?A5: Many nakeup products are vegan-friendly, meaning they contain no animal-derived ingredients and are not tested on animals. However, not all products in the line may meet vegan standards, so it's important to verify each item individually.
- Common Non-Vegan Ingredients: Beeswax, carmine (made from crushed insects), lanolin (from sheep’s wool), and collagen (often animal-sourced) are frequently found in cosmetics.
- How to Identify Vegan Products: Look for official certifications such as “Leaping Bunny,” “PETA-Approved Vegan,” or labels stating “Suitable for Vegans.” Always review the ingredient list, as marketing terms like “natural” or “cruelty-free” do not guarantee vegan status.
- Brand Transparency: Nakeup has been expanding its vegan offerings in response to consumer demand. Check their official website or packaging for updated information on vegan-compliant products.
For those committed to a vegan lifestyle, choosing certified vegan cosmetics supports ethical beauty practices and aligns with personal values regarding animal welfare and sustainability.










