Prep, like most of Bumble and bumble products, was named for what it does: it prepares hair by detangling; it prepares hair by evening the porosity of the hair shaft and enhancing its performance; it prepares hair for cutting (an alternative to Tonic Lotion) by lubricating the blade, dampening hair (instead of water) and helping to reveal texture as the cut progresses. Its low pH helps the cuticle to lay flatter and make hair shinier and smoother.

Lower pH than water, detangling, invisible, nutritious, lubricating, this is a must before styling.

Lauren Hutton keeps it natural with Prep (she loves Tonic, too).

Key Ingredients
Ascophyllum Nudosum Extract: Moisture, elasticity, luster, softness, body, less flyaway
Arachidonic Acid (Component of Vitamin F): Strength
Biotin (Vitamin H): Strengthens hair follicle
Humulus Lupulus (Hops) Extract: Conditioning
Linoleic Acid (Components of Vitamin F): Strength
Macrocystis Pyrifera (Sea Kelp) Extract: Shine, manageability
Retinyl Palmitate (Vitamin A): Sheen, gloss, elasticity, flexibility
Rosmarinus Officinalis (Rosemary) Leaf Extract: Scalp stimulant
Tocopheryl Acetate (Vitamin E): Protects hair, moisturizing Vitamin Complex: strength, health