The Olaplex No.4 Fine Bond Maintenance Shampoo is a weightless volumizing shampoo specially formulated for fine and fragile hair that needs gentle cleansing, repair, and body without heaviness. Powered by patented OLAPLEX Bond Building Technology™, this ultra-light formula helps strengthen weakened strands, repair everyday damage, boost softness and shine, and leave hair feeling clean, fresh, and naturally fuller after every wash.

Doubles Hair Volume: Clinically proven to add body, bounce, root lift, and fuller-looking volume while maintaining lightweight movement.

Repairs & Strengthens Hair: Helps reconnect broken hair bonds to reduce breakage and improve hair resilience.

Ultra-Lightweight Cleansing: Gently removes buildup and excess oil without stripping moisture or weighing hair down.

Boosts Shine & Softness: Leaves hair visibly smoother, shinier, softer, and more manageable after every wash.

Powered by Bond Building Technology™: Formulated with Bis-Aminopropyl Diglycol Dimaleate to support healthier, stronger-looking hair.

Color-Safe & Sulfate-Free Formula: Vegan, dermatologist-tested, and suitable for color-treated and chemically processed hair.