No.5 Strengthening Conditioner (formerly No.5 Bond Maintenance Conditioner)

A lightweight, colour-safe conditioner for hair weakened by frequent colouring, bleaching, heat styling and chemical treatments. It is described as nourishing and hydrating hair without weighing it down, and as reducing the look of split ends, damage and flyaways.

Olaplex Bond-Building Technology (patented; appears in the ingredient list as Bis-Aminopropyl Diglycol Dimaleate)

As stated by the manufacturer (see sources below). Formulas and specifications can change — check the pack or listing.

After shampooing with No.4 Bond Maintenance Shampoo, apply to mid-lengths and ends, leave for 1–3 minutes and rinse well.

None stated on the page read; check the pack.

• Breakage & split ends
• Dry or frizzy hair