LA BIOSTHETIQUE Vitamin C + Niacin Illuminating Concentrate RT 30ml

A 30 ml vitamin concentrate from La Biosthétique's Dermosthétique line, aimed at uneven tone — the patchiness and marks that build up over years rather than a single blemish. It is a drops-based step that slots between cleansing and moisturiser.

The actives

• Stabilised vitamin C — the stabilised form is used so the vitamin stays effective in the bottle rather than degrading.
• Niacin — works alongside the vitamin C to even out the look of colour unevenness.

Worth knowing

La Biosthétique lists the formula as silicone-free, vegan and 90% natural origin (NOC 90). It can be used on its own or blended into a cream, which is useful if a straight concentrate feels like too much on drier skin. Tone work is slow work — judge it over months of consistent use, not over a fortnight.