Maximum strength waterproof skin dye used to darken light or unpigmented areas of skin affected by vitiligo, scars or other causes. Dermal Dye Max vitiligo stain liquid will enable re-pigmentation in patches of skin. Rapid results with uniformed skin complexion. Large 4 ounce bottle. Improved stronger replacement for discontinued Dy-O-derm and Vitadye. Apply a thin layer with a cotton tip applicator (Q-Tip) or small makeup brush. Color will develop in 4 to 6 hours the more applications the darker the skin will become. Reapply when needed usually every 4 to 7 days. For more information and FAQ's please visit our website at www.dermaldyemax.com. Made in the USA