This shampoo is for people with fine, weak hair who want it to feel stronger and more resilient. KMS lists the hair type as straight to coily, so the deciding factor is the condition of the strand (fine and fragile) rather than curl pattern.

It is an everyday shampoo that needs no special technique, suitable for home use or as a salon backbar shampoo in the 25.3 oz (750 ml) size.

It is not a volumizing or clarifying shampoo; if your main concern is flat roots or product build-up, another formula will address that more directly.

Fine hair that snaps easily needs a shampoo that does more than clean. Add Power combines rice protein, which KMS describes as known for strengthening and thickening, with lactic and malic acid to support the hair's internal structure and quaternium-80 to smooth the surface. KMS says it maintains the hair's natural protein balance, so fragile hair feels stronger and more resilient wash after wash.

1. Apply to wet hair and lather.
2. Rinse.
3. Repeat if necessary.

On the plus side, the formula targets strength rather than just volume: acids, rice protein and a surface-smoothing conditioner work together to make fine, weak hair feel sturdier. It is also a vegan formula according to KMS, and it comes in two sizes.

On the other side, KMS does not publish sulfate-free, silicone-free or fragrance-free claims for it, so shoppers who screen for those should read the pack before buying. It also isn't designed to deliver the root lift that a dedicated volumizing shampoo gives.