Biolage Color Last Shampoo
Top PickWhat We Like
- Low-pH formula that doesn't strip fresh color
- Soybean oil seals moisture into colored hair
- Leaves hair soft rather than squeaky
- Works on natural hair too
Worth Noting
- Pricier than the drugstore picks here
- Formula
- Low-pH, color-protecting
- Hair Types
- Color-treated or natural
- Color Claim
- Up to 40 washes with system
- Key Ingredient
- Soybean oil
Color doesn't leave your hair on its own — it gets pushed. An alkaline shampoo swells the cuticle, and dye slips out with the rinse water. Biolage Color Last is built on the opposite principle: a low-pH formula that cleans the scalp without lifting the cuticle open, which is the most useful thing a color shampoo can do. The soybean oil handles the second job, holding moisture in hair that has already been through a dye or lightening service.
That combination is why it's our top pick. Hair comes out soft and smooth, with a finish that reads as conditioned before you get anywhere near the conditioner, and it's gentle enough for uncolored hair — useful in a house where one person dyes and one doesn't. The scent is a soft, salon-ish one that fades rather than following you around.
Read the number on the front carefully. The up-to-40-washes claim is a system claim, measured with the matching Color Last conditioner, so the bottle alone won't get you there; buy the pair or discount the figure. The rest is straightforward: this is a shampoo, not a treatment, so hair that is already dry will want the conditioner every single wash.
Bottom line: If you want one bottle that keeps a salon color looking like a salon color, this is the one we hand people — just buy the matching conditioner.