Skin Cycling

Skin cycling is a structured evening routine that rotates active ingredients over a set number of nights, with deliberate rest days built in. The framework, popularised by dermatologists on social media, is designed to gain the benefits of potent actives while reducing irritation by not using them every night.

A common four-night cycle alternates exfoliation, a retinoid, and two recovery nights before repeating. The rest nights are the defining idea: they give the skin barrier time to recover between stronger treatments.

• Night 1: chemical exfoliation, such as an alpha hydroxy acid.
• Night 2: a retinoid.
• Nights 3 and 4: recovery, focused on gentle moisturising and barrier support.

The approach can suit people who are new to actives, have sensitive or reactive skin, or have struggled with irritation from using exfoliants and retinoids too often. On recovery nights, the emphasis is on hydration and, for some, occlusive steps such as slugging. The cycle is a flexible template rather than a fixed rule and can be lengthened if skin needs more rest. Every step still needs daytime broad-spectrum sun protection, since exfoliants and retinoids can increase sun sensitivity. Those with specific conditions, or using prescription retinoids, should follow tailored guidance from a clinician.