Kerasys Keramide
KERASYS Keramide is a ceramide-focused line built specifically for extreme heat and chemical damage-the kind that leaves hair brittle, porous, and prone to breakage. The 13-SKU lineup delivers ceramide actives across shampoos (600 ml and 1000 ml), intensive treatments (200 ml and 600 ml), and a concentrated 70 ml serum, with the Advanced sub-line taking the formula to a higher active concentration.
By Skinsli editorial Updated
Buying guide
KERASYS Keramide: How Ceramide Repairs Damaged Hair
KERASYS Keramide is a targeted ceramide-delivery line designed for hair that has sustained serious damage-bleaching, heavy heat styling, perming, or chemical straightening that has left the hair porous, brittle, and breaking. This guide explains how ceramide works in hair, why KERASYS Keramide products are structured the way they are, and how to use them effectively.
What Ceramide Does for Hair
Ceramides are lipid molecules that form the structural "cement" between cuticle cells in the hair shaft-they fill the gaps between overlapping cuticle scales and hold the hair's internal structure together. When hair is damaged by heat (flat irons, blow dryers used at high heat repeatedly) or chemicals (bleach, relaxers, perms), ceramide content is depleted, which causes the cuticle to open, the cortex to become exposed, and the hair to lose moisture rapidly between washes.
Hair with depleted ceramide typically presents as: rough to the touch, dull, prone to mid-shaft breakage, slow to hold moisture (goes dry again quickly after conditioning), and prone to static and frizz. Replenishing ceramide from the outside using cosmetic ceramides in haircare partially restores the cuticle's barrier function, reduces moisture loss, and improves the mechanical strength of the hair shaft over time.
Keramide Extreme Damage Shampoo
Available in 600 ml and 1000 ml. This is a ceramide-enriched cleansing shampoo designed to deliver ceramide actives during the wash step rather than only through conditioning. Standard shampoos strip ceramide along with sebum; this formula uses a gentler surfactant system and adds ceramide back to compensate for wash-related depletion.
The Advanced Keramide Extreme Damage Shampoo (1000 ml) carries a higher ceramide concentration than the standard version-appropriate for hair that is severely damaged or for people who wash very frequently and want more ceramide replenishment per wash. The standard 600 ml version is appropriate for moderately damaged hair or for those new to the line.
Keramide Extreme Damage Clinic Treatments
Available in 200 ml and 600 ml. These are the core conditioning step in the Keramide system-applied after shampooing, left for 3-5 minutes, and rinsed with cool water to close the cuticle after ceramide deposition.
The 600 ml is the more economical format for regular users; the 200 ml is better for new users trying the formula or for travel. There is also a dedicated Keramide Heat Damage Clinic Treatment (200 ml) specifically formulated for heat-damage (as opposed to chemical damage). The heat-damage variant emphasizes thermal repair actives alongside ceramide, making it the more targeted option if your damage source is primarily flat irons and blow dryers rather than bleaching or chemical treatments.
Keramide Serums: Extreme Damage and Advanced Rich
KERASYS offers three 70 ml serum variants in the Keramide line:
- Keramide Extreme Damage Clinic Serum 70 ml: the current-formula ceramide serum, applied as a leave-in to damp or dry hair. Provides ongoing ceramide delivery between wash sessions.
- Keramide Extreme Damage Clinic Serum (Old) 70 ml: the previous formula version, still available while stock lasts. Functionally similar to the current version; the ingredient ratios have been slightly updated in the new formula.
- Advanced Keramide Rich Hair Serum 70 ml: the higher-concentration Advanced sub-line serum, with increased ceramide loading for more severely damaged hair. Apply in the same way as the standard serum but in slightly smaller amounts due to the higher concentration.
Leave-in serums deliver ceramide to the hair surface throughout the day, not just at the wash step. For seriously damaged hair, using both the in-shower treatment and the leave-in serum provides dual-window ceramide delivery-at wash and between washes.
Standard Keramide vs. Advanced Keramide
The KERASYS Keramide line has two tiers:
- Standard Keramide: Extreme Damage Shampoo 600 ml, Clinic Treatment 200/600 ml, Clinic Serum 70 ml. Appropriate for moderately damaged hair-color-treated, regular heat-styled, or mildly bleached hair.
- Advanced Keramide: Extreme Damage Shampoo 1000 ml, Rich Hair Serum 70 ml. Higher active concentration, designed for hair with serious damage-multiple bleaching sessions, combined heat-and-chemical damage, or hair that has not responded sufficiently to the standard tier.
If you have tried standard ceramide haircare elsewhere and found it insufficient, the Advanced sub-line is the appropriate starting point. If you have never used ceramide-specific haircare, start with the standard tier and move up if needed.
A Keramide Repair Routine
For best results with KERASYS Keramide:
- Cleanse: Keramide Extreme Damage Shampoo (standard or Advanced depending on damage level). Apply to wet scalp, massage for 60 seconds, extend to lengths, rinse.
- Treat: Keramide Extreme Damage Clinic Treatment (or Heat Damage variant if your primary issue is heat). Apply from mid-shaft to ends, leave for 3-5 minutes, rinse with cool water.
- Leave-in: Keramide Extreme Damage Serum or Advanced Rich Serum applied to towel-dried mid-lengths and ends. Do not rinse.
- Weekly intensive: Replace the standard treatment with the Advanced 10X Repair Ampoule Hair Pack once per week for even deeper repair (if using alongside the Keramide line).
Consistency is the key variable. Ceramide replenishment is cumulative-each wash deposits a small amount, and over 4-8 weeks the cuticle barrier improves measurably. Skipping sessions slows the timeline.
Is Keramide the Right Line for Your Hair Damage?
Keramide is specifically built for structural damage-damage that has compromised the hair shaft's lipid barrier and cuticle integrity. Signs that Keramide is appropriate for you:
- Hair breaks easily-mid-shaft snaps rather than stretching when pulled gently
- Hair feels rough and looks dull even after conditioning
- Hair dries out quickly between washes despite using moisturizing products
- History of bleaching, chemical straightening, multiple perms, or daily heat at high temperature
If your primary issues are scalp (oiliness, dandruff) rather than strand damage, the KERASYS Scalp Clinic line is more appropriate. If your hair is dry but not structurally damaged, the Moisture Clinic or Argan Oil line may be sufficient without the specialized ceramide loading.
FAQ
Frequently asked questions
FAQ
Frequently asked questions
What is ceramide and why does hair need it?
Ceramides are lipid molecules that form the structural bond between overlapping cuticle cells in the hair shaft-they act as the mortar that holds the cuticle's brick-like structure together. Heat styling, bleaching, and chemical treatments deplete this lipid layer, causing the cuticle to open and the hair to lose moisture and structural strength. Ceramide-enriched products replenish this barrier, reducing porosity, frizz, breakage, and dryness over repeated use.
My hair is damaged from a flat iron, not bleach. Which Keramide product should I use?
Use the Keramide Heat Damage Clinic Treatment (200 ml), which is specifically formulated for heat-related damage rather than chemical damage. For your shampoo, the standard Keramide Extreme Damage Shampoo covers both damage types. Add the Keramide Serum as a leave-in after washing for ongoing ceramide delivery between sessions. If your heat damage is severe, the Advanced Keramide Rich Hair Serum provides a higher-concentration leave-in option.
What is the difference between standard KERASYS Keramide and the Advanced sub-line?
The Advanced sub-line carries a higher ceramide concentration than the standard line. The standard tier (Extreme Damage Shampoo 600 ml, Clinic Treatment, standard Serum) is appropriate for moderate damage-color-treated or regularly heat-styled hair. The Advanced tier (Extreme Damage Shampoo 1000 ml, Advanced Keramide Rich Hair Serum) is for hair with serious structural damage that hasn't responded sufficiently to standard ceramide treatment. Start with the standard tier if you're new to ceramide haircare; move to Advanced if results are insufficient after 6-8 weeks.
How long until I see improvement using KERASYS Keramide?
Surface-level improvement (less frizz, smoother feel, easier detangling) typically appears within 2-4 washes. Deeper structural improvement-stronger hair, less mid-shaft breakage, improved moisture retention-takes 6-8 weeks of consistent use because the changes require multiple growth cycles to become visible in the full length of the hair. The serum used between washes accelerates the timeline compared to wash-step-only treatment.
Do I need both the Keramide treatment and the serum, or is one enough?
For moderately damaged hair, the in-shower treatment alone may be sufficient. For seriously damaged hair, using both provides dual-window ceramide delivery: the treatment deposits ceramide during the wash (when the cuticle is open and absorption is highest), and the leave-in serum provides ongoing ceramide availability throughout the day between washes. The two products work in the same direction-using both is not redundant.
Should I apply the Keramide serum to my scalp as well as the lengths?
No. Apply the Keramide serum from mid-shaft to ends only. The scalp produces natural oils that maintain its own lipid balance. Applying a leave-in serum to the scalp can cause buildup around the follicles and accelerate oiliness. The ceramide treatment step (rinse-out) may touch the scalp briefly during application, which is fine-but the leave-in serum should remain on the lengths where the structural damage lives.
Is KERASYS Keramide safe for bleached or color-treated hair?
Yes-Keramide is one of the best-suited lines for bleached and color-treated hair specifically because bleaching depletes ceramide more aggressively than other damage types. The ceramide replenishment helps reconstruct the cuticle barrier that holds color molecules in place, which can extend color vibrancy alongside providing structural repair. Rinse treatments with cool water to maximize the cuticle-sealing effect after each conditioning session.
What is the difference between the current Keramide Serum and the (Old) version?
The Keramide Extreme Damage Clinic Serum (Old) is the previous formula-it remains available while stock lasts and is functionally similar to the current version. The ingredient ratios were updated in the new formula (primarily refining the ceramide-to-carrier ratio for improved absorption). Either version delivers ceramide to the hair cuticle; the current formula is the updated recommendation. The Old version is a good option if it is available at a reduced price.
Can I combine KERASYS Keramide products with other KERASYS lines?
Yes-KERASYS lines are designed to be used together. A common combination is the Keramide shampoo (for ceramide delivery during cleansing) followed by an Argan Oil treatment (for additional lipid conditioning from a different lipid type) and the Keramide serum as a leave-in. The ceramide and argan oil actives work through different mechanisms and complement each other. Avoid combining with strong clarifying products (Black Jay Clinic Shampoo) on the same wash session, as they counteract the ceramide deposit.
Are KERASYS Keramide products on skinsli authentic?
Yes. KERASYS products on skinsli are sourced from Korean supply channels and are the same formulations sold domestically in Korea. KERASYS is part of the AmorePacific Group and has strict supply-chain controls. The Keramide line is a Korean domestic product-not a reformulated export version.















