Skin ageing is a multifactorial process involving intrinsic factors (genetics and hormones) and extrinsic factors (UV exposure, smoking, pollution and diet). Three main categories recur most often in the cosmetic formulation literature.
i. Sun Protection: The Foundation
Photoageing, or UV-related signs of ageing, is the most extensively studied extrinsic factor in the skin-renewal literature. Regular broad-spectrum sun protection is the foundation of an anti-ageing approach; the other two categories build on it.
For a detailed guide to SPF and filter selection, the sunscreen guide provides further context.
ii. Retinoids: Renewal
The retinoid family (vitamin A derivatives) includes the cosmetic actives most frequently studied for their effects on skin renewal. The main members are:
- Retinol: A common retinoid in cosmetic formulas (0.1% to 1%).
- Retinaldehyde: A more direct conversion pathway; measured doses (0.05% to 0.1%).
- Bakuchiol: A plant-derived alternative. It is not structurally a retinoid, but similar pathways of action are studied in the literature.
- Prescription retinoids (Tretinoin, Adapalene): These fall within clinical care, not cosmetics.
Retinoids are generally added to an evening routine; a gradual start on 2-3 nights a week reduces the risk of sensitivity. Daytime sun protection may be a consistent choice during regular use.
iii. Antioxidants: Protection
Antioxidants act as a shield against free radicals arising from UV exposure and environmental stress. Classic combinations include:
- Vitamin C, vitamin E and ferulic acid: An antioxidant trio in a synergistic formula.
- Niacinamide: Barrier support and the potential for a more even-looking tone.
- Resveratrol and green tea extract: Polyphenol-based antioxidant support.
- Astaxanthin and Coenzyme Q10: Lipid-based antioxidants.
Peptides: Supporting Actives
Peptides (such as palmitoyl pentapeptide-4 and copper tripeptide-1) are amino acid chains that serve as natural building blocks of the skin. They are among the supporting actives frequently studied in relation to renewal and may be an additional component alongside retinoids and antioxidants.
A Routine Framework
- Morning: Gentle cleansing, antioxidant serum (the vitamin C trio), moisturiser, then sun protection.
- Evening: Double cleansing, a retinoid introduced gradually, then moisturiser. A peptide-containing product can be added morning or evening.
The Medical Boundary
An anti-ageing approach is a cosmetic care framework. Clinical procedures (botulinum toxin, fillers, lasers and mesotherapy) belong in medical care and are separate from an OTC routine. A dermatological assessment may be helpful for pronounced signs of ageing or a combined care plan.
This article is for information only; it does not provide a medical diagnosis, treatment or a guarantee of safety. If you have sensitivities, are pregnant or have particular circumstances, you are advised to discuss your decisions with your own doctor.