R

Ingredients: R

Discover transformative retinoids and rejuvenating actives starting with R — the gold standard in anti-aging skincare.

Retinol (Vitamin A)

The Gold Standard Anti-Aging Ingredient

Type

Vitamin A Derivative

Solubility

Oil Soluble

Best For

Wrinkles, Texture, Acne

Found In

Night Serums, Anti-Aging Creams

Efficacy Level

Highly Researched (Gold Standard)

Origin

Synthetic

What It Does

Retinol is a derivative of vitamin A and the most celebrated anti-aging ingredient in dermatology. Once absorbed into skin, it converts to retinoic acid, which binds to nuclear receptors to regulate gene expression. This powerful mechanism accelerates cell turnover, stimulates collagen production, unclogs pores, fades hyperpigmentation, and refines skin texture. Retinol addresses virtually every sign of aging while improving acne—making it the closest thing skincare has to a "miracle" ingredient.

The Benefits

Reduces fine lines and deep wrinkles

Boosts collagen and elastin production

Fades dark spots and hyperpigmentation

Unclogs pores and treats acne

Refines texture and minimizes pores

Reverses photodamage and sun spots

Backed by Science

Retinol is the most extensively researched cosmetic ingredient, with over 700 peer-reviewed studies. Landmark research in New England Journal of Medicine and Archives of Dermatology demonstrates its ability to increase collagen by 80%, reduce wrinkles by 40-60%, and reverse photoaging at the molecular level. The FDA recognizes prescription retinoids (tretinoin) for treating wrinkles—over-the-counter retinol follows similar mechanisms with gentler results.

Formulation Insight

Retinol is formulated at 0.25-1% in over-the-counter products (prescription tretinoin ranges 0.025-0.1%). It's unstable and degrades with light, air, and water—requiring airless, opaque packaging. Time-release and encapsulated formulations reduce irritation. Retinol must convert to retinaldehyde then retinoic acid in skin, making it gentler but slower-acting than prescription forms. Pair with hyaluronic acid, niacinamide, and ceramides to minimize irritation.

Did You Know?

Retinol was the first ingredient FDA-approved to treat wrinkles (as prescription tretinoin in 1995)—establishing its status as the gold standard in anti-aging.

How to Use It Safely

  • Typical Concentration: 0.25-1% for over-the-counter products
  • Frequency: Start 2-3x weekly, gradually increase to nightly; PM use only
  • Pairing: Excellent with niacinamide, ceramides, hyaluronic acid; avoid vitamin C same time
  • Caution: Causes dryness, peeling, redness initially; MUST use SPF 30+ daily; avoid during pregnancy

Ingredient Source & Sustainability

Cosmetic retinol is synthetically produced through controlled chemical synthesis, ensuring pharmaceutical-grade purity and stability. Synthetic production is more sustainable and consistent than extracting from animal sources. It's vegan-friendly (when synthesized), cruelty-free, and biodegradable.

Retinoic Acid (Tretinoin)

The Most Potent Prescription Retinoid

Type

Prescription Retinoid

Solubility

Oil Soluble

Best For

Severe Aging, Acne

Found In

Prescription Creams (Rx Only)

Efficacy Level

FDA-Approved (Gold Standard)

Origin

Synthetic

What It Does

Retinoic acid (tretinoin) is the active form of vitamin A and the most potent retinoid available. Unlike retinol, it doesn't require conversion—it works immediately by binding directly to retinoic acid receptors (RARs) in skin cells. This triggers rapid cell turnover, collagen stimulation, and melanin regulation at maximum potency. FDA-approved for treating wrinkles and acne, tretinoin delivers dramatically faster results than over-the-counter retinoids but requires medical supervision due to increased irritation potential.

The Benefits

Dramatically reduces wrinkles and fine lines

Maximum collagen stimulation

Treats severe acne and cystic breakouts

Reverses photodamage and sun spots

Fades hyperpigmentation rapidly

Works faster than OTC retinoids

Backed by Science

Tretinoin is the only topical treatment FDA-approved for treating wrinkles (since 1995). Groundbreaking studies by Dr. Albert Kligman demonstrated its ability to reverse photoaging at the cellular level. Clinical trials show 0.025-0.1% tretinoin reduces fine wrinkles by 50-80% and increases collagen synthesis by 80% within 6-12 months.

Formulation Insight

Tretinoin is available by prescription only at 0.025%, 0.05%, and 0.1% concentrations in cream, gel, and micro-gel formulations. Micro-encapsulated versions (like Retin-A Micro) reduce irritation. It's photosensitive and must be used at night. Often combined with other Rx ingredients like niacinamide, hydroquinone, or azelaic acid for enhanced results.

Did You Know?

Tretinoin was originally developed to treat acne in the 1960s—its anti-aging benefits were discovered serendipitously when patients noticed dramatic skin improvement.

How to Use It Safely

  • Prescription Required: Must be prescribed by dermatologist/physician
  • Frequency: Start 2-3x weekly, increase gradually; PM only
  • Pairing: Use with gentle moisturizers and barrier repair ingredients
  • Caution: Significant dryness, peeling, redness; MANDATORY SPF 50+; contraindicated in pregnancy

Ingredient Source & Sustainability

Tretinoin is pharmaceutically synthesized through controlled chemical processes, ensuring pharmaceutical-grade purity. Synthetic production is sustainable and provides consistent therapeutic efficacy. It's vegan-friendly, cruelty-free, and biodegradable.

Retinaldehyde (Retinal)

The Gentle-Yet-Powerful Retinoid

Type

Vitamin A Derivative

Solubility

Oil Soluble

Best For

Sensitive, Aging Skin

Found In

Premium Anti-Aging Serums

Efficacy Level

Clinically Proven

Origin

Synthetic

What It Does

Retinaldehyde (retinal) is the direct precursor to retinoic acid, requiring only one enzymatic conversion step compared to retinol's two. This makes it approximately 10x more potent than retinol while remaining gentler than prescription tretinoin. It stimulates collagen, accelerates cell turnover, and offers antimicrobial benefits—making it effective for both anti-aging and acne. Its balanced efficacy-to-irritation ratio makes it ideal for retinoid-sensitive individuals seeking powerful results.

The Benefits

More effective than retinol, gentler than tretinoin

Reduces wrinkles and fine lines

Antimicrobial properties for acne

Boosts collagen production

Less irritation than other retinoids

Faster results than retinol

Backed by Science

Research in Dermatology shows retinaldehyde at 0.05-0.1% produces anti-aging effects comparable to 0.05% tretinoin with significantly less irritation. Studies demonstrate it's 11x more effective than retinol at stimulating retinoic acid receptor activity. Its antimicrobial properties against C. acnes bacteria make it uniquely effective for adult acne.

How to Use It Safely

  • Typical Concentration: 0.05-0.1% in serums
  • Frequency: Start 2-3x weekly, increase to nightly; PM use
  • Pairing: Combine with niacinamide, ceramides, hyaluronic acid
  • Caution: Mild dryness possible; use SPF 30+ daily

Resveratrol

The Red Wine Antioxidant

Type

Polyphenol Antioxidant

Solubility

Oil Soluble

Best For

Environmental Damage, Aging

Found In

Antioxidant Serums, Night Creams

Efficacy Level

Evidence-Based

Origin

Grapes, Japanese Knotweed

What It Does

Resveratrol is a potent polyphenol antioxidant found in red wine, grapes, and berries. It protects skin by neutralizing free radicals from UV exposure, pollution, and oxidative stress while activating longevity genes (sirtuins) that slow cellular aging. Resveratrol also provides anti-inflammatory benefits, brightens skin tone, and supports collagen integrity—making it a powerful anti-aging and protective ingredient.

The Benefits

Powerful antioxidant protection

Activates longevity genes

Protects against UV and pollution

Reduces inflammation and redness

Brightens and evens skin tone

Supports collagen health

Backed by Science

Studies show resveratrol activates SIRT1 (sirtuin 1), a longevity gene linked to cellular repair and lifespan extension. Research in Archives of Dermatological Research demonstrates it reduces UV-induced DNA damage by 40% and protects collagen from degradation. Its antioxidant capacity is 17x greater than idebenone.

How to Use It Safely

  • Typical Concentration: 0.5-1% in serums
  • Frequency: Once or twice daily
  • Pairing: Synergistic with vitamin C, vitamin E, ferulic acid
  • Caution: Well-tolerated; suitable for all skin types

Rosehip Oil

Nature's Regenerative Oil

Type

Botanical Oil

Solubility

Oil Soluble

Best For

Scars, Dryness, Aging

Found In

Face Oils, Repair Serums

Efficacy Level

Traditional Use + Clinical

Origin

Rosa Canina Seeds

What It Does

Rosehip oil is extracted from the seeds of wild rose bushes (Rosa canina) and contains high levels of essential fatty acids (linoleic and linolenic acid), vitamins A and C, and antioxidants. It deeply nourishes, regenerates damaged skin, and visibly reduces scars, hyperpigmentation, and fine lines. Its lightweight texture absorbs quickly without clogging pores, making it suitable even for acne-prone skin seeking hydration and repair.

The Benefits

Fades scars and stretch marks

Rich in vitamins A & C

Deeply hydrates without clogging pores

Reduces hyperpigmentation

Antioxidant protection

Supports skin regeneration

Backed by Science

Clinical studies show rosehip oil significantly improves post-surgical scars, reduces hyperpigmentation, and enhances skin moisture. Research demonstrates its essential fatty acid content (77% polyunsaturated) supports barrier repair and reduces transepidermal water loss. Its natural vitamin A (trans-retinoic acid) provides gentle retinoid-like benefits.

How to Use It Safely

  • Application: Use 2-3 drops on damp skin, morning or evening
  • Frequency: Safe for daily use
  • Pairing: Layer under moisturizer or mix with serums
  • Caution: Choose cold-pressed, organic; store in dark bottles to prevent oxidation