hair lengthening

They commonly promise detangling, frizz control, moisture and shine, reduced split ends and breakage, and thicker or fuller-looking hair depending on the formula.

Booster shots are mixed into a shampoo or conditioner base. Typically you choose a base product, add one or more booster shots to the bottle, shake to combine, and then use the customized product as your regular cleanser or conditioner.

Leave-ins (sprays, conditioners, serums) are applied to wet or damp hair and left in. Rinse-out treatments and masks are applied after shampooing, left on for a few minutes (commonly about 2–5 or 3–5 minutes), then rinsed. Booster shots are mixed into shampoo or conditioner and shaken before use, following the product steps.

Common labels include paraben-free, sulfate-free, silicone-free, and phthalate-free, along with vegan and cruelty-free. You’ll also see gluten-free and fragrance-free on some items.