Description
Protect your damaged hair from heat with the Kérastase Ciment Thermique treatment. This milk from the Kérastase Résistance Ciment Thermique range is applied without rinsing before the hair dryer or the straightener. It offers a heat-protection effect up to 230 °C.
Its formula combines a pro-keratin complex, ceramides and resurrection plant sap. According to the brand, it helps strengthen the fibre, smooth the hair and limit breakage from blow-drying. Spread a hazelnut-sized amount over washed, towel-dried hair, comb through, then style. This Kérastase treatment detangles, coats the hair and leaves a fresh lemon scent.
The offer title states 250 ml, yet the tube delivered sometimes contains 150 ml: check the size before buying. The Kérastase Ciment Thermique treatment suits damaged hair, fine or thick, straight or curly. On fine hair, apply it mainly to the ends. It complements the shampoo and mask from the Résistance range.
Where it fits in your routine
WashShampoo
NourishConditioner or mask
ProtectThis treatment
StyleHair dryer, straightener
Made for
DamagedBrittle
A hazelnut-sized amount on washed, towel-dried hair
Protects up to 230 °C
No rinse
Our verdict on this Kérastase Ciment Thermique treatment
Review written by the Aura Capillaire team · Updated on 19 September 2026
We read buyers’ feedback on this Kérastase Ciment Thermique treatment to pick out what comes up most often, good and not so good.
The strong points
- Protection against heat: up to 230 °C, before the dryer or the straightener.
- Detangled, coated hair, smoother and softer after blow-drying.
- A hazelnut-sized amount is enough, with no greasy finish when you stick to the dose.
- A fresh lemon scent: it perfumes the hair.
Good to know
- A size to check: the offer states 250 ml, yet several parcels contained a 150 ml tube. Look at the size in the offer before buying.
- A treatment to dose carefully: too much product makes hair stick together. On long hair, allow several hazelnut-sized amounts, so the tube empties faster.
Where we land: for damaged hair that often goes under the dryer or the straightener, this is a serious, pleasant protection. For long hair that breaks, the Extentioniste Thermique below is designed for it. For more ideas, browse our hair care.

Ciment Thermique, Ciment Anti-Usure, Extentioniste Thermique or Résistance routine?
The same heat-protection treatment exists in several versions in the Résistance range. Here is how this Kérastase Ciment Thermique treatment compares with the three other most requested versions.
| Care | Size | Use | Best for |
|---|---|---|---|
| Ciment Thermique Kérastase · this treatment |
150 to 250 ml | No rinse | Blow-drying |
| Ciment Anti-Usure Kérastase |
200 ml | — | Worn hair |
| Extentioniste Thermique Kérastase |
150 ml | No rinse | Long hair |
| Résistance routine Kérastase |
3 treatments | Wash and treatment | Complete routine |
The Kérastase Ciment Anti-Usure is aimed at worn hair, in a 200 ml tube. Its title does not state the application or any protection against heat. It is less well described than the Ciment Thermique. For blow-drying, the Kérastase Ciment Thermique treatment is the clearest choice.
The Kérastase Extentioniste Thermique is a leave-in heat-protection treatment, in 150 ml. It is designed for damaged long hair. It targets the length more than breakage from blow-drying. For mid-length hair, the Ciment Thermique is enough.
The Kérastase Résistance routine brings together the Bain Force Architecte shampoo, a mask and the Ciment Thermique. It is the most complete routine. The budget is higher. If you already have your washing products, the Ciment Thermique on its own is enough.
Your questions about this Kérastase Ciment Thermique treatment
Kérastase Ciment Thermique 150 ml or 250 ml?
The offer states 250 ml, yet several parcels contained a 150 ml tube. Check the size in the offer before buying. The treatment itself is the same.
A Kérastase hair treatment to protect against the straightener?
The Ciment Thermique is applied to washed, towel-dried hair, before the dryer or the straightener. It protects against heat up to 230 °C. It suits damaged hair, fine or thick.
What is the difference between Ciment Thermique and Extentioniste Thermique?
Both are leave-in treatments that protect against heat. The Ciment Thermique targets breakage from blow-drying. The Extentioniste Thermique is designed for damaged long hair.
Find more treatments to leave in on our leave-in treatments shelf.
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