REEN Hair Darkening Treatment is a nourishing hair solution designed to gradually darken gray or lightened hair while deeply conditioning. Formulated with natural herbal extracts and color-enhancing ingredients, this treatment helps achieve a more vibrant and youthful hair appearance without harsh dyes. Its hydrating formula also strengthens and softens hair, leaving it silky and smooth. Ideal for those seeking a subtle, natural-looking darkening effect with continuous use. Simply apply after shampooing for a revitalized and enriched hair tone.