What Does Keratin Do for Hair? Guide to Keratin Treatments

Keratin for hair FAQs

• How long do keratin treatments last?

  How long your keratin treatment lasts will depends on the type of treatment. At-home treatments using L’Oréal Professionnel’s Keratin Alpha Sleek range see results that last up to two weeks*, while in-salon keratin treatments will vary from salon to salon, but can last up to 6 months.

• What does keratin treatment do?

  Keratin treatment’s benefits include calming frizzy hair, straightening curly hair, repairing damaged hair, adding gloss and shine, and helping hair to dry more quickly.

• Is keratin good for damaged hair?

  Yes, one of the main keratin treatment benefits is the protein's ability to repair damaged hair by filling in gaps created by damage. This can help to improve the appearance of split ends and other damage.

• Does keratin help with frizzy hair?

  Yes, keratin treatments can help to smooth frizzy hair for an extended period of time. L’Oréal Professionnel’s Keratin Alpha Sleek range offers up to 2 weeks of frizz control* .

• What’s the difference between salon and at-home keratin treatments?

  The main difference between at-home and in-salon keratin treatments is the strength of the product, cost, and time that their effects last. Salon treatments tend to be stronger, can only be applied by a professional and can offer up to 6 months of smoothed and glossy hair, but can be costly. At-home treatments, like L’Oréal Professionnel’s Keratin Alpha Sleek range, can be used at home with results lasting around 2 weeks per use.
  
  *Consumer test on 68 participants, 1 application/week for 4 weeks. Based on 15-day break observation.