So, what's the big deal? Retinol is an anti-ageing powerhouse. It thickens the epidermis, helps cell differentiation, regulates keratinisation, prevents the breakdown of collagen and elastin and increases cutaneous vitamin A levels, so that we reap the benefits of its anti-ageing properties. In simpler terms, retinol leaves us with skin that's: - smoother, - softer, - radiant and even-toned.