Biotherm Blue Therapy Blue Retinol Night Serum 30ml Body Oil one pump covers an arm

one pump covers an arm or a leg comfortably

and reapplies cleanly if you need the lift mid-afternoon

Follow with a lightweight conditioner if your ends are dry

The scent is straightforward — actual lavender

Biotherm Blue Therapy Blue Retinol Night Serum 30ml Body Oil one pump covers an armA retinol serum that doesn't waste time with a gentle introduction. Biotherm's formulation hits you with the active straight off no stabiliser padding, no slow build promises so this is the nightly thing, not the starter version. 30ml bottle. The texture is thin enough to sink in before moisturiser, but concentrated enough that one pump per night is the sensible dose. Skip it if your skin is already on a retinoid, or cycle it in every other night if