skinChemists Biotin Hair Growth & Thickening Shampoo nourishes the scalp and boosts hair volume for thicker, fuller-looking hair. Key ingredients: Pro‑Vitamin B5 to moisturize and soothe the scalp, and Biotin to support hair strength. Massage onto wet scalp for 60 seconds, rinse and repeat, then follow with the matching Biotin conditioner. Expect cleaner hair week 1, more volume by week 4, and fuller-looking hair by week 8. For external use only; keep away from children; avoid eye contact; patch test recommended; individual results may vary.