Editor's TipEditor's Tip

Further strengthen weakened hair shafts with Kérastase Masque Force Architecte.

Kérastase

Birchbox Breakdown

Just like the sands of your favorite beaches, hair can erode over time. And just like you might erect barriers to the sea, your hair needs strategic reinforcements. This restoring shampoo heals strands from within to strengthen limp hairwhile imparting a smooth shine on the surface.

How it Works

Patented molecular technology, referred to as Botox for the hair, delivers fibrous strengtheners to weakened strands at targeted points. Keratin further rebuilds broken hair, while ceramides smooth the cuticle to alleviate breakage and flyways.

How to Use

Apply a quarter-sized dollop to wet hair and scalp. Massage until lathered, then rinse thoroughly.

More for You!
  • Free returns within 90 days of purchase
  • Extra samples and gifts in the Bonus Shop

Product Reviews & Sample Feedback

15 Reviews
4.8 out of 5 stars
5 Star
13
4 Star
1
3 Star
1
2 Star
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1 Star
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Most Helpful Customer Reviews

Gentle and adds volume
Purchased

This shampoo smells amazing and works wonders on my fine hair. It adds shine,strength, and volume. It is creamy but does not weigh hair down at all. I think this would work for all hair types in need of damage repair.

5
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Repairs my hair

I have been using Kerastase for awhile now, it really improves my dry, brittle hair. It doesn't just coat it, it repairs my hair and I have less noticeable damage.

5
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Noticed a difference!
Purchased

I am very picky on shampoos and conditioners. I normally can't tell a real difference with shampoo or I hate it because it's too drying or opposite too heavy on my hair and makes it look weighed down and just a weird texture that is hard to style. I have used this shampoo with 3 different conditioners that I like and have achieved great results with all 3. This shampoo is noticeably different than others I like. It makes my hair feel so soft and healthy and great texture and easy to style. Loooove it! So glad I used my birchbox points on this! Worth the high price.

5
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Hmmmm

I used this at the recommendation of my hair dresser. I feel like this left my hair a little greasy and almost congested. It made my hair shine, but just didn't have the effect I wanted it to.

3
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Wonderful

I don't know what the deal is (why it is different) with this line of the Kerastase, but it is awesome for my hair. I have color treated, very long hair, and it shampoos away product build up without leaving it parched. It's so expensive, but I have never found a better product.

5
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Best Hair Product!
Purchased

As always, this shampoo is the best. Smells amazing, makes my hair feel amazing, and is totally worth the extra bucks. Love Kerastase!

5
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Amazing
Purchased

This product is amazing. Really helped strengthen my hair. The product is a little pricey but you do not need much.

5
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Pricey but great product
Purchased

Wonderful line that I splurge on occasionally! It is pretty pricey but a really good shampoo if you have dry or damaged hair.

4
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Restore!
Purchased

I really like this product and it's wonderful restoring ability -- I can tell a difference whether I've used this shampoo, or a different one, just by feeling my hair later that day. This shampoo is super strengthening, restorative, and smoothing without feeling heavy.

5
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Amazing
Purchased

This shampoo restored my hair after taking it from natural blonde to a dark chestnut and back to blonde over 18 months. The shampoo provided protection from the color process which left my hair healthier by the end of my color experiment. My typically fine, thin, breakage prone hair is getting thicker and sturdier the longer I use this product.

5
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