The facial concentrate Collistar with pure active ingredients of glycolic acid and niacinamide, an advanced anti-spot solution designed to even out the complexion and improve skin luminosity. The highly concentrated formula promotes cell renewal, gently exfoliating and visibly reducing discoloration, dark spots and post-inflammatory signs. Thanks to the combined action of glycolic acid, which stimulates epidermal turnover, and niacinamide, ideal for soothing and strengthening the skin barrier, the product guarantees firmer, smoother and more radiant skin. Particularly suitable for those who want a targeted and high-performance treatment, this 25 ml concentrate can be easily integrated into the daily routine, giving visible results and a natural, uniform-looking complexion.