I have very dry and dull skin.i drink lot of water and eat healthy. can you please recommend supplements for good skin and hair?

Wrong question: If you are otherwise healthy, no supplement will deliver nicer skin. Avoid caustic soaps. Dove is easy to find. Apply a cream for dry skin immediately after your shower. Eucerin Eczema care with ceramides is very effective. No amount of water will make the slightest difference. You do not need 8 glasses of water a day except on the desert.