keratin healing oil

Available sizes vary widely across brands and include examples such as 33.8 oz, 7.1 oz, 6.1 oz, 4.7 oz, 4 oz, 3.4 oz, 1.7 oz, 80 ml (2.7 oz), and smaller concentrated sizes. Availability depends on the specific product and retailer.

Application depends on the format: masques are usually applied to damp or dry hair, left on for about 5–20 minutes, then rinsed; spray mists are applied to damp hair before blow-drying; shampoos are used for regular cleansing; and small concentrated treatments or lightweight oils can be applied to damp or dry hair as needed for smoothing and shine, sometimes daily.

Most products are marketed for all hair types but specifically call out benefits for dry, frizzy, over-processed, color-treated, and heat-damaged hair.

Many listings claim protective benefits such as heat protection, UV shielding, and resistance to pollution or mineral buildup. Brands typically cite heat-protective ingredients, oils that offer UV barrier properties, and actives like red algae or phytic acid to help guard against pollutants and buildup.

Common formulation and ethical claims include sulfate-free, paraben-free, and alcohol-free formulations, plus product labels such as vegan, cruelty-free, non-toxic, or generally marketed as 'clean' ingredients. Specific claims vary by product.

Products typically combine bond-building keratin or proteins with botanical oils to smooth the hair cuticle, reduce frizz and flyaways, strengthen weakened strands to lower breakage risk, and help minimize the appearance of split ends over time.