WHAT’S THE DEAL WITH… Retinol

The so-called gold-standard ingredient when it comes to anti-ageing, retinol can actually help your skin whatever your age. Its superpower? This form of vitamin A speeds up cell renewal to plump skin, reduce fine lines, combat pigmentation and tackle spots. Retinol is normally formulated as a serum with different strengths available. Don’t underestimate its potency, and start small. Opt for a low strength formula (0.1–0.3 per cent) and apply every other day, always at night. Over time, you can work your way up to a stronger formula and nightly use.

La Roche-posay Retinol B3 Serum, £40;

Cerave Resurfacing Retinol Serum, £14. Both boots.com