NOW Solutions Clinically Advanced Hair, Skin and Nails nurtures hair, skin, and nails from the inside. It features Cynatine HNS a revolutionary patented and bioavailable form of solubilized keratin that can help maintain full, lustrous hair and nails that are strong and flexible, and help skin retain its youthful moisture and elasticity, plus battle signs of aging associated with free radicals. With 20 other critical vitamins, minerals, amino acids including MSM, L-Proline, and Hyaluronic acid, this formula has all the necessary nutrients for the support and maintenanceof the skin_x0012_s healthy and youthful appearance. NOW natural and organic Supplements are an effective way to ensure you and your loved ones are getting essential vitamins, minerals and nutrients for daily optimal health. Since 1968, NOW has been making top quality products that are tested to the highest standards to empower people to lead healthier lives. NOW Foods' promise - what is on the label, is precisely what is in the bottle.Recommended Dosage: Adult Dosage: Take 3 capsules daily with food. Use up to 3 months to see beneficial effects.Caution: Consult a health care practitioner prior to use if you are pregnant or breastfeeding or if symptoms persist or worsen. Stop use if hypersensitivity/allergy occurs. Zinc supplementation can cause a copper deficiency. If you are unsure whether you are taking enough copper, consult a health care practitioner prior to use. Diuretic effect may occur. Xylitol is harmful to pets; seek veterinary care immediately if ingestion is suspected.