People with dry, dull, or brittle hair who want a gentler wash than a standard sulfate shampoo.

Also suits color-treated or chemically processed hair, since the sulfate-free base is less likely to strip dye.

Straightforward to use at any experience level — no professional training needed.

The main reason to reach for this over a drugstore sulfate shampoo is the cleansing base: sodium lauroyl methyl isethionate washes hair without the harsher stripping action of sodium lauryl or laureth sulfate, so color-treated or chemically processed hair holds onto more of its moisture and pigment wash after wash. The argan oil and marine extracts layered into that base reinforce shine and softness rather than deep-condition, so it works best as a maintenance shampoo for hair that's already reasonably healthy but looking dull, not as a repair treatment for badly damaged hair.

Apply a generous amount to wet hair and work into a lather.

Rinse thoroughly.

Follow with Rusk Deepshine Oil Moisturizing Conditioner.

Pros:

• Sulfate-free cleansing base is gentler on hair color and less drying than sodium lauryl/laureth sulfate shampoos
• Argan oil and marine extracts add shine and softness during the wash
• Lathers and rinses cleanly despite being sulfate-free

Cons:

• Contains methylchloroisothiazolinone/methylisothiazolinone, preservatives some people with sensitive scalps react to
• Fragrance is added, which isn't ideal for fragrance-sensitive users
• Not built for fine or limp hair — the Volumizing version in the same line addresses that instead