A routine isn't a product list — it's an ordered system. The sequence you apply products, the frequency of actives, and how you adapt across seasons all determine whether your routine strengthens or undermines your skin barrier.
Skin Cycling
The dermatologist-approved 4-night rotation that maximises retinoid and exfoliation benefits while protecting your barrier.
The Double Cleanse
Oil-based then water-based — why two different cleansers do completely different jobs.
Layering Rules
Thinnest to thickest, water to oil, and pH dependency — the physics of product application order.
Seasonal Transitions
Adapting from winter barrier fortification to summer UV defence — what changes and what stays the same.