People with fragile, damaged hair that snaps during brushing or styling, including colour-treated and lightened hair and anyone who heat-styles regularly. It is a retail leave-in that is simple to use at home on all hair types; fine hair should use a lighter hand.

Rinse-off products only stay on the hair for a few minutes. Anti-Snap stays in, so its 1% Strength Complex keeps fortifying the fibre while you brush, blow-dry and style, which is exactly when fragile hair tends to break. It also adds heat protection and shine before blow-drying. Redken reports a 73% reduction in breakage when it is used with the Extreme shampoo and conditioner.

• After shampooing and conditioning, apply to damp hair.
• Concentrate on fragile or damaged areas, or distribute through all of the hair.
• Do not rinse. Style as usual.

Pros:

• Leave-in format keeps working between washes
• Doubles as a heat protectant before blow-drying
• Helps smooth the cuticle so hair feels less rough
• Part of the Extreme system Redken tested for a 73% reduction in breakage

Cons:

• Too much can weigh down fine hair; start with a small amount
• Not a substitute for a mask on severely damaged hair
• Contains fragrance allergens (limonene, linalool, benzyl alcohol)