Biotherm Blue Retinol Serum Night

Biotherm Blue Retinol Serum Night harnesses the brand's marine science expertise to deliver potent anti-ageing benefits whilst you sleep. Formulated with retinol and blue algae extract, this lightweight serum targets fine lines, uneven texture, and loss of firmness. The fast-absorbing formula works overnight to renew skin's appearance, leaving it visibly smoother and more radiant by morning. Ideal for mature or concerned skin seeking intensive renewal without irritation. Apply to clean skin before bed as the final step in your nighttime routine.