Oligo Blacklight Nourishing Shampoo 8.5oz/250ml is formulated to help replenish highlighted, bleached, white, and natural blonde hair in need of moisture and weightless conditioning. Its unique formula is sulfate, salt, and paraben-free and enriched with 11 amino acids and argan oil, which are commonly used in hair care products for their purported benefits. To use, apply to wet hair. Lather, massage, and rinse. Follow with Blacklight Nourishing Conditioner. Use it when you feel like your hair has lost its color or shine and is less manageable than you want. Our nourishing shampoo can form part of your color-retaining nourishing hair products.