Kérastase Genesis — Complete Guide 2026
Kérastase's Genesis range targets weakened hair prone to breakage-induced hair fall. It helps strengthen the hair fiber, support the scalp, and address the needs of fine, thick, dry, thinning hair, or hair experiencing more intensive hair fall.
9 documented products
Up to 99.3% less breakage
Heat protection up to 220°C
Daily care and intensive treatments
Key active ingredients in the Genesis range
| Active Ingredient | Documented Role |
|---|---|
| Ginger Root | Helps protect hair against daily external aggressors. |
| Edelweiss Native Cells | Recognized for their antioxidant power and ability to support fiber resistance. |
| Aminexil 1.5% | Present in certain targeted scalp treatments; helps promote fiber anchorage at the root. |
| Caffeine | Helps stimulate scalp microcirculation. |
| Arginine | Amino acid present in the initial strengthening treatment formula. |
| Rhamnose | Present in the Thickening and Soothing Treatments. |
| PS21 | Active ingredient indicated in the Soothing Treatment. |
The Genesis approach:
1. Strengthen the fiber to limit breakage.
2. Support the scalp to create a more favorable environment for the fiber from the root.
3. Adapt the routine to hair type, dryness level, hair fall intensity, and scalp needs.
1. Strengthen the fiber to limit breakage.
2. Support the scalp to create a more favorable environment for the fiber from the root.
3. Adapt the routine to hair type, dryness level, hair fall intensity, and scalp needs.
Product 1
Bain Hydra-Fortifiant
Type: Shampoo | Formats: 250 ml · 500 ml · Refill, volume not specified · Travel, volume not specified
Description
Strengthening shampoo for weakened, fine to normal or oily hair. Clarifies and strengthens the fiber to reduce breakage-induced hair fall.
Bain Hydra-Fortifiant is a strengthening anti-breakage shampoo designed for weakened hair prone to breakage-induced hair fall. It gently clarifies and strengthens the fiber and helps prevent sebum buildup on the scalp. The initial formula combines ginger root and edelweiss native cells.
Benefits
- Immediate softness
- 80% less hair fall due to breakage
- Cleanses the scalp
- Clarifies and strengthens the fiber
- Helps prevent sebum buildup on the scalp
80% less hair fall due to breakageImmediate softness
Conditions for stated results
The 2026 file links the results of softness and reduced hair fall due to breakage to an instrumental test after applying Bain Hydra-Fortifiant.
Key active ingredients
Ginger root and edelweiss native cells.
Directions for use
- Apply Bain Hydra-Fortifiant to wet hair.
- Massage the scalp and emulsify.
- Rinse thoroughly.
- Repeat washing as needed.
- In case of contact with eyes, rinse immediately and thoroughly.
Product 2
Bain Nutri-Fortifiant
Type: Shampoo | Formats: 250 ml · 500 ml · Refill, volume not specified
Description
Strengthening shampoo for thick or dry and weakened hair. Clarifies, nourishes, and strengthens the fiber to reduce breakage-induced hair fall.
Bain Nutri-Fortifiant gently cleanses and purifies the scalp from the root and helps eliminate impurities that weaken hair. Its foaming formula removes dirt and excess sebum, nourishes dry hair, soothes and moisturizes from root to tip. The formula combines edelweiss and ginger root to strengthen fiber resistance.
Benefits
- 93.3% less breakage
- 93.3% less hair fall due to breakage
- 93.3% more resistant
- 93.3% stronger
- 49% softer
- 65% more hydrated and nourished
- Amplifies hair fiber and adds volume when combined with Masque Reconstituant
93.3% less breakage93.3% more resistant65% more hydrated49% softer
Conditions for stated results
- Breakage, resistance, and strength results are from a performance test measuring the reduction of broken hair after one application, compared to a classic shampoo.
- Hydration and softness results are from a performance test after application.
- The amplification and volume effect was evaluated in combination with Masque Reconstituant.
Key active ingredients
Ginger root and edelweiss native cells.
Directions for use
- Apply Bain Nutri-Fortifiant to wet hair.
- Massage the scalp and emulsify.
- Rinse thoroughly.
- Repeat washing as needed.
- In case of contact with eyes, rinse immediately and thoroughly.
Product 3
Fondant Renforçateur
Type: Conditioner | Formats: 200 ml
Description
Strengthening conditioner for weakened hair. Restores and strengthens the fiber to reduce the risk of breakage-induced hair fall.
Fondant Renforçateur is a strengthening conditioner for weakened hair prone to breakage-induced hair fall. Its creamy formula with a lightweight finish restores and strengthens the fiber. Enriched with edelweiss native cells and ginger root, it smooths, strengthens, and softens the fiber while nourishing hair without weighing it down. Hair is even, shiny, and strengthened.
Benefits
- Immediate softness
- 97% stronger hair
- Restores and strengthens the fiber
- Nourishes without weighing down
- Smooths and softens hair
97% stronger hairImmediate softness
Conditions for stated results
The 2026 file links the statement "97% stronger hair" to an instrumental test after applying Bain Hydra-Fortifiant.
Key active ingredients
Ginger root and edelweiss native cells.
Directions for use
- Apply a small amount of product to washed and towel-dried hair.
- Distribute from mid-lengths to ends.
- Avoid roots to maintain light volume.
- Leave on for 2 to 3 minutes.
- Emulsify and rinse thoroughly.
Product 4
Masque Reconstituant
Type: Mask | Formats: 200 ml
Description
Strengthening anti-breakage mask for weakened hair. Deeply nourishes, detangles, and strengthens hair to reduce breakage-induced hair fall.
Masque Reconstituant provides intense hydration and targeted strengthening to combat breakage-induced hair fall linked to repeated treatments, particularly brushing. The initial formula combines edelweiss native cells and ginger root. The mask deeply nourishes, facilitates detangling, and strengthens damaged areas of the fiber.
Benefits
- 99.2% less breakage
- 99.2% more resistant
- 99.2% stronger
- 99.2% less hair fall due to breakage
- 89% more hydrated and nourished
- 40% softer
- Amplifies hair fiber and adds volume when combined with Bain Nutri-Fortifiant
99.2% less breakage99.2% more resistant89% more hydrated40% softer
Conditions for stated results
- Breakage, resistance, and strength results are from a performance test after one application, compared to a classic shampoo.
- Hydration and softness results are from a performance test after application.
- The amplification and volume effect was evaluated in combination with Bain Nutri-Fortifiant.
Key active ingredients
Ginger root and edelweiss native cells.
Directions for use
- Apply the mask to damp, washed, and towel-dried hair.
- Distribute through lengths and ends.
- Leave on for 5 minutes.
- Add a little water and emulsify.
- Rinse thoroughly.
Product 5
Défense Thermique
Type: Strengthening leave-in fluid | Formats: 150 ml
Description
Heat-protective leave-in treatment that strengthens and detangles hair while offering up to 24 hours of frizz protection.
Défense Thermique is a strengthening anti-breakage fluid for styling. It protects hair prone to breakage-induced hair fall, hydrates without weighing down, and helps control frizz. It protects hair from heat up to 220°C. The initial formula combines edelweiss native cells and ginger root.
Benefits
- 99.3% less breakage
- 99.3% more resistant
- 99.3% stronger
- 99.3% less hair fall due to breakage
- 88% more hydrated and nourished
- Heat protection up to 220°C
- 24-hour frizz protection, even in high humidity
- Detangles hair without weighing it down
99.3% less breakageProtection up to 220°C24h anti-frizz88% more hydrated
Conditions for stated results
- Breakage, resistance, strength, and hair fall due to breakage results are from an instrumental test after one application, compared to a classic shampoo.
- Hydration and softness results are from an instrumental test after application.
- Anti-frizz protection is stated for a duration of 24 hours.
Key active ingredients
Ginger root and edelweiss native cells.
Directions for use
- On towel-dried hair: apply 2 to 4 pumps depending on hair length and thickness.
- Distribute the product to the ends.
- Comb to distribute the product evenly.
- Blow-dry or air-dry.
- On dry hair: apply as a finishing touch after drying.
- Distribute to tame frizz and enhance shine.
- Style as desired.
Product 6
Sérum Anti-Casse Fortifiant
Type: Daily strengthening leave-in scalp serum | Formats: 90 ml
Description
Concentrated serum with a light, non-greasy texture, designed to strengthen weakened hair and scalp.
Sérum Anti-Casse Fortifiant is a daily strengthening anti-breakage serum for weakened hair prone to breakage. It improves fiber resistance to minimize breakage. The product is clinically evaluated for daily use over six weeks. The initial source indicates a formula including Aminexil 1.5%, caffeine, arginine, ginger root, and edelweiss native cells.
Benefits
- Helps preserve the scalp's natural protective barrier
- Helps re-anchor the fiber at the root
- Strengthens the hair fiber
- 84% less hair fall due to breakage in the evaluated protocol
- Light and non-greasy texture
- Daily use for six weeks
84% less hair fall due to breakageClinical study: 99 peopleUse: 6 weeks
Conditions for stated results
- The re-anchoring effect at the root was evaluated in a clinical study of 99 people after six weeks.
- The claim of stronger fiber and 84% reduction in breakage-induced hair fall is associated with the Genesis system: Bain Nutri-Fortifiant, Masque Reconstituant, and Sérum Anti-Casse Fortifiant.
- The product was applied daily for six weeks in the mentioned clinical study.
Key active ingredients
Aminexil 1.5%, caffeine, arginine, ginger root, and edelweiss native cells.
Directions for use
- Use once daily, in the morning or before bed, for six weeks.
- Apply 4 doses to dry or towel-dried scalp, section by section.
- One dose corresponds to a dropper filled to the mark.
- Massage gently.
- Do not rinse.
- In case of contact with eyes, rinse immediately and thoroughly.
Product 7
Ampoules Cure Anti-Casse Fortifiantes
Type: Intensive leave-in scalp treatment | Formats: 10 × 6 ml
Description
Strengthening anti-breakage treatment for weakened hair. During periods of more intensive hair fall, the ampoule strengthens the fiber and helps maximize hair beauty.
Ampoules Cure Anti-Casse Fortifiantes are designed for weakened hair prone to hair fall. The initial formula aims to reduce hair fall, support fiber retention, promote hair follicle anchorage, and soothe the scalp. They are used daily as a treatment for six weeks.
Benefits
- Reduces hair fall from the root
- Improves fiber retention
- Helps anchor hair follicle to the scalp
- Soothes the scalp
- Helps preserve the scalp’s natural protective barrier
- Six-week intensive treatment
1 ampoule per day6-week treatmentNo-rinse
Key Ingredients
Aminexil 1.5%, ginger root, arginine, and caffeine indicated in the initial ingredients list.
Directions
- Use one ampoule per day, morning or before bed, during periods of intense hair loss.
- Break off the top of the ampoule to use the silicone applicator.
- Apply one ampoule to dry or towel-dried scalp, section by section.
- Simultaneously press the bottom of the ampoule during application.
- Gently massage.
- Do not rinse.
- Continue the treatment for six weeks.
Data Status 2026: The product is present in the 2026 file, but its French fields are empty. This French page is therefore preserved from the initial Genesis file.
Product 8
Thickening Treatment
Type: Intensive no-rinse treatment for the scalp | Formats: 10 × 6 ml
Description
Intense no-rinse treatment for sensitive scalp and thinning hair prone to breakage-induced hair fall.
Thickening Treatment is an intensive no-rinse treatment for sensitive scalp and thinning hair. The formula is enriched with Aminexil and Rhamnose.
Benefits
- Facilitates styling
- Increases resistance to traction
- Reduces breakage during styling
- Helps hair appear thicker and stronger
- Helps restore volume, shine, and suppleness
- Leaves hair silky to the touch
Thicker-looking hairResistance to traction6-week treatment
Key Ingredients
Aminexil and Rhamnose.
Directions
- Use daily for best results.
- Break off the top of the ampoule to reveal the silicone applicator.
- Apply one ampoule to dry or towel-dried scalp, section by section.
- Simultaneously press the bottom of the ampoule during application.
- Gently massage.
- Do not rinse.
- Use as a treatment for six weeks.
Product 9
Soothing Treatment
Type: Intensive no-rinse treatment for the scalp | Formats: 10 × 6 ml
Description
Intense no-rinse treatment for sensitive scalp prone to feelings of discomfort.
Soothing Treatment is an intensive no-rinse treatment for sensitive scalp. Enriched with PS21 and Rhamnose, it provides intensive soothing care against feelings of discomfort.
Benefits
- Soothes feelings of scalp discomfort
- Stimulates fibroblast activity to improve scalp quality
- Helps prevent sebum oxidation
Intensive soothing carePS21 + RhamnoseNo-rinse
Key Ingredients
PS21 and Rhamnose.
Directions
- Keep the protective cap on the bottle while installing the applicator.
- Place the applicator vertically on top of the bottle.
- Turn the applicator until it is tight and secure.
- Apply to dry or towel-dried scalp.
- Do not rinse.
Available Data Limit: The 2026 file does not specify the frequency of use, duration of treatment, or massage steps. These elements have not been added.
Quick Selection Guide
| Profile or Need | Recommended Routine or Product in Sources |
|---|---|
| Fine to Normal Hair | Bain Hydra-Fortifiant → Fondant Renforçateur → Défense Thermique → Sérum Anti-Casse Fortifiant |
| Oily Roots and Dry Ends | Bain Hydra-Fortifiant → Masque Reconstituant → Défense Thermique → Sérum Anti-Casse Fortifiant |
| Thick or Dry Hair | Bain Nutri-Fortifiant → Masque Reconstituant → Défense Thermique → Sérum Anti-Casse Fortifiant |
| Period of Intensive Hair Fall | Routine adapted to hair type + Ampoules Cure Anti-Casse Fortifiantes for six weeks |
| Thinning Hair and Sensitive Scalp | Cure Épaississante for six weeks, according to the application protocol |
| Feelings of Scalp Discomfort | Cure Apaisante, according to the protocol available in the 2026 file |
| Protection Before Blow-Drying | Défense Thermique before blow-drying or heat styling |
Kérastase Genesis products — available at RM Coiffure salon. Ask for a personalized routine based on your level of breakage, hair type, and scalp needs.
