Kérastase Extentioniste Serum is a strengthening treatment for long, fragile hair. It is formulated with high quality active ingredients that work together to help protect and strengthen hair as it grows. The treatment helps reduce hair breakage and thinning, improving hair bulb health to promote healthy hair growth. Plus, the advanced formula protects hair from future damage, helping to maintain hair health and strength.

Active ingredients:
Silk Protein: strengthens and protects hair.
Ceramide: repairs and rebuilds the hair structure.
Lipids: moisturize and smooth the hair.

Hair texture and type:
Kérastase Extentioniste Serum has a light, non-sticky texture that easily penetrates the hair to strengthen and protect it. It is indicated for long and fragile hair, which needs additional support to grow strong and healthy.

Target Audience:
Kérastase's Extentioniste Serum is indicated for women with long and fragile hair who seek to strengthen and protect their hair during growth.

Complementary products:
For an optimal result, it is recommended to use Kérastase's Extentioniste Serum with other products from the Extentioniste line, such as Bain Extentioniste and Fondant Extentioniste.

Orders to Japan are shipped from Portugal and within 48 hours of purchase (unless stock is out of stock or incomplete delivery address). At the time of dispatch, an email will be sent with tracking data and the corresponding invoice attached (please check your SPAM folder).

All shipments have loss insurance (check delivery times for the type of shipment selected).

If you are not satisfied with the product, consult our returns policy.