What Changes in Mature Skin
Mature skin — broadly skin from the mid-40s onward, though changes begin in the 30s — undergoes a series of overlapping biological changes:
- Collagen loss: ~1% per year from the mid-20s; accelerates sharply around menopause (up to 30% in the first 5 years post-menopause due to oestrogen decline)
- Ceramide depletion: Ceramide synthesis declines with age — the most direct contributor to the dry, fragile feel of mature skin
- Slowed cellular turnover: From 28 days (20s) to 60–90 days (60s+) — skin appears dull, uneven, and slower to heal
- Sebaceous gland atrophy: Less natural oil production, compounding dryness
- Elastin degradation: Loss of skin recoil, particularly in sun-exposed areas
- Fat redistribution: Volume loss in the hypodermis creates hollowing and sagging
The Priority Hierarchy for Mature Skin
- 1. Barrier repair first: Ceramide-rich moisturisers, morning and night. A compromised barrier accelerates every other ageing mechanism.
- 2. Daily SPF (non-negotiable): The single evidence-strongest anti-ageing intervention available without a prescription
- 3. Retinoids: The only topical ingredient with strong RCT evidence for collagen synthesis stimulation
- 4. Vitamin C: Essential cofactor for collagen cross-linking; antioxidant protection against UV-induced damage
- 5. Gentle exfoliation (not aggressive): PHA or low-dose lactic acid to support slowed turnover without barrier disruption
Approach to Retinoids in Mature Skin
| Retinoid | Strength | Starting Point |
|---|---|---|
| Retinyl palmitate | Very mild | For those new to retinoids with fragile barrier |
| Retinol 0.1–0.3% | Mild-moderate | 2–3x/week; increase gradually over 12 weeks |
| Retinaldehyde 0.05–0.1% | Moderate-strong | More effective than retinol, less irritating than tretinoin |
| Tretinoin 0.025–0.05% | Strong (Rx) | Gold standard; dermatologist guidance recommended |
The "sandwich" method for retinoid sensitivity: Apply moisturiser → wait 20 minutes → apply retinoid → wait 20 minutes → apply moisturiser again. This reduces irritation without eliminating efficacy.
See the full Retinoids guide and Collagen & Elastin for the underlying biology.