Using a Keratin Treatment at Home: A How-to Guide.

Keratin treatments are everywhere these days, advertising their hair-smoothing benefits. Our experts have rounded up the top tips for exploring at-home keratin treatments and keratin hair routine innovations so you can tame your mane from the comforts of home, with results that last.

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7 min read
L'Oréal Professionnel Team
25/02/2026

Your questions and our answers on at-home keratin hair treatment.

  • What is an at-home keratin hair treatment?

    An at-home keratin hair treatment is a chemical protein treatment acting on the surface of the hair designed to smooth the hair cuticle.
    Keratin Alpha Sleek Smooth Transformer is an innovative treatment and the first ever at-home smoothing treatment that transforms hair at the deepest keratin alpha level, giving long lasting results and preserving hair integrity.

  • What types of hair is an at-home keratin treatment suitable for?

    A keratin hair treatment at home can be suitable for many different hair types, from straight to curly.
    Keratin hair routine innovations such as Keratin Alpha Sleek Smooth Transformer is suitable for all hair types, including colored hair. It is also safe to use on hair that has gone through a straightening treatment.

  • What are the steps of an at-home keratin hair treatment?

    The basic steps of keratin hair treatment at home are: washing and sectioning the hair, applying the product, blow drying and for optimal results, straightening with a flat iron.

  • What is keratin alpha?

    It is the primary protein that forms the very core structure of your hair, residing at the deepest level of the fiber.

  • How does keratin alpha determine the hair’s shape?

    It is the primary protein that forms the very core structure of your hair, residing at the deepest level of the fiber. Alpha-keratin is the fundamental structural protein that forms the hair. Its internal helical arrangement, along with the extensive network of bonds within the hair's cortex, dictates the strand's overall shape, and ultimately determines if hair appears straight, wavy, or curly.

  • Does Keratin Alpha Sleek range contain keratin?

    Keratin is an animal-derived ingredient, also found in human hair. These products don’t contain keratin, but reprogram hair from deep inside the fiber at Keratin Alpha level, reshaping Keratin Alpha chains for 2 weeks of smooth, frizz-controlled hair.

All you need to know about hair.