Kerasys Clinic

KERASYS Clinic is a professional-grade sub-line built around three targeted concerns: scalp health, strand damage repair, and moisture retention. With 63+ SKUs spanning shampoos, conditioners, rinses, and treatments in generous Korean salon sizes (600 ml to 980 ml+), it covers every step from cleansing through conditioning for people dealing with real scalp or hair problems rather than just fragrance preferences.

  • Scalp & Damage Focus
  • Salon-Size Formats
  • Moisture Clinic Range
  • Korean Pro Haircare

By Skinsli editorial Updated

Buying guide

KERASYS Clinic Haircare: Understanding the Three Product Lines

KERASYS is one of Korea's largest professional haircare brands, and its Clinic sub-line is built around a specific premise: that most haircare problems fall into a small number of categories that each require a different active approach. The Clinic range organizes its products around three concern pillars-scalp health, damage repair, and moisture-rather than marketing-led fragrance or lifestyle positioning. This guide explains what each pillar addresses and how to use the products effectively.

About KERASYS and the Clinic Philosophy

KERASYS is produced by AmorePacific Group, one of Korea's largest beauty conglomerates. The brand targets the mass-professional market-products formulated to professional standards but priced and packaged for home use. The Clinic line specifically positions itself around a diagnostic model: identify your hair concern, match to the appropriate Clinic series, and use the system (shampoo plus conditioner or rinse) for consistent results.

The large format sizes (750 ml, 980 ml) reflect Korean household and salon usage patterns. These are not travel products; they are designed for daily use in households where multiple people share the same haircare line, or for single users who want a cost-effective price-per-wash.

Damage Clinic: For Chemically Treated and Heat-Damaged Hair

The Damage Clinic range addresses hair that has been weakened at the structural level through bleaching, chemical straightening, perming, or repeated heat styling. Damage at this level means the hair shaft's outer cuticle layer is lifted or partially destroyed, leaving the inner cortex exposed and vulnerable to further breakage, moisture loss, and protein depletion.

Damage Clinic formulas work through a combination of:

  • Conditioning polymers that coat the raised cuticle and reduce friction between strands.
  • Hydrolyzed protein (typically keratin or collagen-derived) that temporarily fills cuticle gaps and reduces porosity.
  • Emollients that restore softness and reduce the brittleness that makes damaged hair break at the mid-shaft.

Available as: Damage Clinic Shampoo (600 ml, 750 ml), Damage Clinic Rinse 600 ml, Damage Clinic Conditioner 980 ml. The Conditioner 980 ml is the highest-intensity format in this series and is recommended for hair with significant bleaching or chemical treatment history.

Scalp Clinic: For Oily, Irritated, or Problem Scalps

The Scalp Clinic range targets the scalp surface rather than the hair strand-the distinction matters because scalp conditions and strand conditions often require different ingredient approaches. An oily or flaky scalp needs stronger cleansing and sebum regulation at the follicle level; a damaged strand needs film-forming protection and reduced friction.

Scalp Clinic formulas typically include:

  • Salicylic acid or piroctone olamine (antimicrobial/antifungal actives) for flaky scalp conditions.
  • Purifying surfactants that remove sebum, scalp buildup, and environmental residue without stripping the scalp's protective barrier.
  • Soothing agents (like panthenol or allantoin) that reduce redness and sensitivity often associated with scalp conditions.

Available in four sizes: Scalp Clinic Shampoo 600 ml, 750 ml, 980 ml, and 1000 ml. The 1000 ml is the most cost-effective format for users who commit to this series long-term. The Scalp Clinic Rinse 750 ml is a lightweight conditioning rinse that adds moisture without weighing down fine scalp hair.

Moisture Clinic: For Dry, Dehydrated Hair

The Moisture Clinic range addresses dehydration-hair that feels rough, breaks easily, and lacks elasticity due to insufficient water content in the hair shaft. This is distinct from damage (which is structural) and scalp issues (which are surface-level). Dry hair typically has a normal or low-porosity cuticle that doesn't retain water well rather than a damaged-open cuticle like over-processed hair.

Moisture Clinic formulas use humectants (such as hyaluronic acid or glycerin) that draw water into the hair shaft, combined with occlusive agents that seal the cuticle to prevent moisture escaping after washing. The result is hair that stays softer between washes and requires less conditioner at each wash step.

The Moisture Clinic Shampoo 980 ml is the key product in this series. It pairs well with any Moisture Clinic conditioner or a leave-in moisture treatment for very dehydrated hair.

Choosing Between Damage, Scalp, and Moisture Clinic

The key question is whether your primary hair issue lives at the scalp, the strand, or both:

  • Scalp Clinic if you have dandruff, flaking, persistent itch, visible oiliness within 24 hours of washing, or scalp inflammation. The scalp is the root cause of these issues.
  • Damage Clinic if your scalp is fine but your hair is brittle, prone to mid-shaft breakage, dull despite conditioning, or has history of bleaching, perming, or heat damage. The strand structure needs repair.
  • Moisture Clinic if your hair feels rough and dry but is not chemically damaged-typical in people with naturally coarse or low-porosity hair, or in very dry climates.

It is possible to need both scalp-focused and strand-focused care. In that case, use a Scalp Clinic shampoo (applied to the scalp) followed by a Damage Clinic conditioner (applied from mid-shaft to ends). The two formulas are designed to work together across the same wash routine.

Rinse vs. Conditioner: Which to Choose

KERASYS Clinic offers both rinse and conditioner formats. The practical difference:

  • Rinse - lighter formula, applies quickly, rinses out fast, leaves minimal residue. Best for fine hair or oily scalps where heavy conditioning leads to limpness.
  • Conditioner - heavier formula with more emollient content, requires 2-3 minutes contact time, leaves a more pronounced softening effect. Best for coarse, thick, or significantly damaged hair that needs more intensive conditioning at each wash.

If you are not sure which to choose, start with the Rinse. You can always switch to the Conditioner if the rinse version doesn't provide enough moisture retention.

Navigating the Size Options

KERASYS Clinic comes in 600 ml, 750 ml, 980 ml, and 1000 ml sizes depending on the series and format. As a practical guide:

  • 600 ml - trial or shorter-term use; roughly 60-80 washes for shoulder-length hair used 3 times per week.
  • 750 ml - standard household size; good for single-user confirmation after trying the 600 ml.
  • 980-1000 ml - salon or multi-user household; best per-wash economics once you have confirmed the formula works for you.

The 980 ml Damage Clinic Conditioner is the highest-intensity product and comes only in the largest format, reflecting that it is intended for committed regular use rather than occasional treatment.

Building a Complete Routine with KERASYS Clinic

For best results, match your shampoo and conditioner within the same Clinic series or cross-apply thoughtfully (Scalp Clinic shampoo on scalp + Damage Clinic conditioner on lengths). A typical routine using KERASYS Clinic:

  1. Wet hair thoroughly with warm water.
  2. Apply Clinic shampoo to the scalp first-work in with fingertip massage for 60-90 seconds, then distribute remaining lather to lengths without vigorous scrubbing.
  3. Rinse completely. Some scalp conditions benefit from a 2-minute leave-in before rinsing.
  4. Apply rinse or conditioner from mid-shaft to ends only. Do not apply heavy conditioner to the scalp, especially with Scalp Clinic-it counteracts the scalp-cleansing work of the shampoo.
  5. Leave for 2-3 minutes (conditioner) or 30 seconds (rinse), then rinse with cool water to close the cuticle.

FAQ

Frequently asked questions

  • KERASYS Clinic is a concern-specific sub-line within the KERASYS brand, focused on three targeted hair and scalp problems: damage repair, scalp issues (oiliness, flaking, irritation), and moisture dehydration. While other KERASYS ranges may be organized around fragrance or lifestyle positioning, the Clinic line is organized around what your hair actually needs-making it easier to select the right product for your specific situation.

  • Yes-Scalp Clinic is specifically formulated for scalp conditions including flaking and mild dandruff. The formula includes antimicrobial and sebum-regulating actives that address the scalp imbalance behind most common dandruff. For best results, apply to the scalp and work in with a fingertip massage before rinsing, and use consistently (at least 3 times per week) for 4-6 weeks to see a meaningful reduction in flaking.

  • Damage Clinic is for hair that has been structurally weakened by bleaching, chemical treatments, or heavy heat styling-hair that breaks at the mid-shaft, has visible roughness, or used to be stronger. Moisture Clinic is for hair that is dry and rough but has no significant chemical history-naturally coarse hair or hair in a very dry climate that just lacks hydration. If your hair was fine before chemical treatments and has declined since, Damage Clinic. If it has always been dry, Moisture Clinic.

  • Yes-this is a recommended approach for people who have both a scalp issue and strand damage. Use the Scalp Clinic shampoo focused on the scalp (where the issue lives) and the Damage Clinic conditioner on the lengths and ends (where the damage lives). Apply each product to its relevant area and avoid applying heavy conditioner to the scalp, which counteracts the scalp-cleansing effect of the shampoo.

  • The Scalp Clinic shampoo is suitable for daily or near-daily use for oily scalps. The Damage Clinic shampoo and conditioner are best used 3-4 times per week; daily use of heavy damage-repair formulas can over-coat the hair with conditioning agents. The Moisture Clinic shampoo can be used daily or every other day. All KERASYS Clinic products are designed for regular ongoing use rather than occasional treatments.

  • Choose the Rinse if your hair is fine, tends to go limp after conditioning, or if your scalp gets oily quickly-the lighter rinse formula adds moisture without weighing hair down. Choose the Conditioner if your hair is thick, coarse, or significantly damaged and needs more intensive conditioning at each wash. When unsure, start with the Rinse; you can always move up to the Conditioner if it isn't providing enough moisture retention.

  • The Damage Clinic range is the most appropriate for color-treated hair-it is specifically designed to address the cuticle damage that color processing causes, and can help extend color vibrancy by smoothing the cuticle that holds color in place. Avoid Scalp Clinic (which contains clarifying actives that can accelerate color fade) on freshly colored hair unless you have a specific scalp issue that requires it. The Moisture Clinic is also safe for color-treated hair used for regular hydration maintenance.

  • The 980-1000 ml sizes offer the best per-wash price and are practical once you have confirmed a formula works for you. At 3-4 washes per week for one person, a 980 ml bottle lasts approximately 3-4 months. If you share with another household member, it's 1.5-2 months. The 600 ml is a good entry point for a new series; the 750 ml is a solid single-user household size; and the 980 ml is the economical choice for confirmed favorites or shared use.

  • The Scalp Clinic line is the most relevant for hair that sheds due to scalp-level causes-excess sebum buildup around the follicle, inflammation, or mild dandruff conditions that create an unfavorable scalp environment. However, KERASYS Clinic is not a dedicated anti-hair-loss line. For targeted shedding treatment, consider the KERASYS Hair Clinic AP+ system (a separate KERASYS sub-line) or consult a dermatologist if shedding is significant.

  • Yes. KERASYS is a major Korean brand, and the products sold on skinsli are sourced from Korean domestic supply-the same formulations available in Korean salons and pharmacies. These are not reformulated international versions. KERASYS is part of the AmorePacific Group and has strict quality and authenticity controls on its supply chain.