Retinoids
Vitamin A derivatives — one of the most studied categories in cosmetic and dermatological science
Function in skin biology
Retinoids are a family of vitamin A derivatives, ranging from retinyl esters and retinol (available in cosmetics) to prescription-strength tretinoin (a drug, not a cosmetic ingredient). Within the cosmetic-grade range, retinol is converted by skin enzymes into retinaldehyde and then retinoic acid — the biologically active form — in a multi-step process that occurs gradually, which is part of why retinol is better tolerated than direct retinoic acid application.
Why Ambernay uses it
Ambernay uses cosmetic-grade retinol in the Retinoid Barrier Renewal Cream, calibrated for daily tolerability rather than maximum theoretical strength. Retinoid use is one of the more irritation-prone categories in cosmetic science, so concentration, encapsulation/stabilisation technology and use-frequency guidance are formulated together, not treated as separate decisions.
Where concentration matters
Cosmetic retinol formulas typically range from 0.01% to 1%. Higher concentrations are not inherently "better" — they increase irritation risk without a guaranteed proportional increase in benefit, particularly for skin new to retinoid use. Retinoids are light- and air-sensitive; stabilisation and packaging materially affect whether the labelled concentration remains active by the time it reaches skin.
What we do not claim
We do not claim that our retinol cream performs identically to prescription tretinoin or other prescription retinoids. We do not claim it treats acne, rosacea or any diagnosed skin condition. We do not claim immediate or guaranteed visible results — retinoid adaptation is gradual and individual.
Used in Ambernay products
- Retinoid Barrier Renewal Cream — evening-only formula, calibrated for daily tolerability
Best paired with
Retinoids are formulated for evening use only — they are light-sensitive and increase photosensitivity, making daytime SPF use essential alongside any retinoid routine. They are typically introduced gradually (2–3 times per week, increasing over weeks) and paired with barrier-supportive moisturisers to manage the adjustment period.
Claim caution / regulatory note
Cosmetic retinol is regulated differently from prescription retinoids (tretinoin, adapalene), which are drugs requiring medical supervision. Cosmetic retinoid claims must remain within cosmetic function — visible texture, appearance of fine lines, skin renewal feel. They cannot claim to treat, cure or medically reverse skin conditions.