What Is a Keratin Treatment for Hair? Salon Smoothing vs At-Home Care

When you search for “keratin treatment” online, you will find two quite different things. One is a salon smoothing service that temporarily relaxes the hair's natural texture. The other is a conditioning treatment infused with keratin protein, designed to strengthen and repair hair rather than change its shape. Both are great, but they solve different problems, so it is worth knowing which one you actually need before booking or buying.

Salon keratin smoothing treatments

A salon keratin smoothing treatment is a professional service that temporarily reduces frizz and relaxes curl pattern, typically lasting several weeks to a few months depending on hair type and aftercare. It is applied and processed by a stylist, and results vary by formula and technique. This is a specialist, in-salon service, it is not something you can recreate accurately at home, and it sits outside the scope of this guide.

At-home keratin conditioning treatments

The other, more accessible category is keratin-infused hair care: shampoos, masks and leave-in treatments formulated with keratin protein to help reinforce the hair's internal structure. Hair is roughly 90% keratin, and everyday stress, heat styling, colour processing, brushing, UV exposure, gradually wears down the outer cuticle layer that protects it. A keratin conditioning treatment can help replenish some of that protein at the hair's surface, which may support smoothness, shine and resilience to breakage with regular use. It will not change your hair's texture the way a salon smoothing service does, but it is a simple way to support hair that is feeling weak, dry or damaged between salon visits.

Signs your hair could benefit from added keratin

A few signals suggest keratin-focused care is worth adding to your routine: hair that feels rough or straw-like to the touch, visible split ends, reduced elasticity (hair that snaps rather than stretching slightly under gentle tension), or dullness that persists even after conditioning. These are common after repeated heat styling, chemical colour services, or high sun and salt exposure over summer, and tend to build up gradually rather than appearing overnight.

How to work a keratin treatment into your routine

Keratin-infused masks and treatments are typically used weekly to fortnightly rather than with every wash, using them too frequently can leave fine hair feeling weighed down. For most hair types, applying a keratin treatment to mid-lengths and ends (avoiding the scalp) after shampooing, then rinsing thoroughly, works well. If your hair is fine or find it can feel heavy, start with once every two weeks and adjust based on how your hair responds.

The right Paul Mitchell formula to try

If you are looking for a keratin-focused treatment to support damaged or heat-styled hair, the Paul Mitchell Awapuhi Wild Ginger Keratriplex Treatment uses KeraTriplex® keratin protein technology alongside hand-harvested awapuhi ginger extract to help rebuild weakened strands, with a box of four treatments for convenient, regular use. For a deeper conditioning step, the Awapuhi Wild Ginger Intensive Treatment combines keratin with moisture-replenishing ingredients for hair that needs both strength and hydration. Explore the full Awapuhi Wild Ginger range to find the right fit for your hair type.