Description Vitry Boost Nail Serum 10 ml is a treatment to beautify nails. Its vegan formula, enriched with black rose extract and urea, is composed of 95% naturally derived ingredients. It contains Biotin (vitamin B8) which stimulates keratin production to fortify and strengthen nails. Its non-greasy texture intensely nourishes nails to restore their shine and vitality. Vegan. Made in France.