Growus Growus Damage
GROWUS Damage Therapy is a Korean hair care line designed for chemically treated, heat-damaged, or fragile hair. The collection covers the full wash-day routine: Damage Therapy Shampoo EX 500ml, Damage Therapy Treatment EX 220ml, No-Wash Treatment EX 250ml, Hair Oil 65ml, Scalp Scaling Ampoule 50ml, and Hair Milk 160ml. Related therapy lines-Sea Salt Therapy Treatment, Recover Therapy Shampoo EX, Algae Therapy Mineral Shampoo, and Algae Therapy Mineral No-Wash Treatment-round out the range with targeted scalp and mineral care. Ten products are available on skinsli.
By Skinsli editorial Updated
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Buying guide
GROWUS Damage Therapy Hair Care: A Buyer's Guide
GROWUS is a Korean professional hair care brand whose Damage Therapy line addresses the structural effects of bleaching, coloring, perming, and heat styling on hair. The collection on skinsli includes the core Damage Therapy series-shampoo, rinse-off treatment, no-wash treatment, hair oil, scalp scaling ampoule, and hair milk-plus related therapy sub-lines for sea salt conditioning, recovery shampoo, and algae mineral care. Ten products are available. This guide covers what each product does, how to structure a wash-day routine using the line, what to expect from Korean professional hair treatments compared to salon-grade US products, and how to match the right GROWUS Damage Therapy products to your hair's specific concerns.
What the GROWUS Damage Therapy line targets
Chemical and heat damage breaks down the disulfide bonds and outer cuticle layer of the hair shaft, leading to porosity (hair absorbs water unevenly and loses it quickly), breakage, frizz, and a dull surface appearance. GROWUS Damage Therapy products contain bond-conditioning, hydrolyzed protein, and keratin-adjacent ingredients that fill in cuticle gaps and reduce water loss from the strand cortex.
The Damage Therapy label in GROWUS is not a single-product claim but a full system: each step in the routine-shampoo, rinse-off treatment, no-wash treatment, and the oil-reinforces what the previous step deposited. Using the shampoo alone without the treatment gives partial benefit; using the full sequence consistently for several weeks is when the cumulative improvement in elasticity and shine becomes clearly visible.
Damage Therapy Shampoo EX 500ml
The Damage Therapy Shampoo EX 500ml is a sulfate-moderated cleansing formula designed not to over-strip the protein treatments deposited in the hair shaft during treatment steps. Regular high-sulfate shampoos wash out conditioning agents quickly, reducing how long a rinse-off treatment's benefit lasts. A damage-therapy shampoo applies gentler surfactants that cleanse the scalp and hair effectively without removing the treatment layer deposited from the previous wash day.
At 500ml, this is a practical size for daily or every-other-day use. Apply to wet hair, lather at the scalp with fingertips rather than nails, and rinse fully before applying the treatment. If your hair is particularly dry at the ends, apply the shampoo primarily to scalp and roots rather than working it through the entire length-this reduces product residue on fragile ends. The Recover Therapy Shampoo EX 500ml in the collection is an alternative for hair that needs a recovery-focused shampoo with a slightly different formulation emphasis.
Damage Therapy Treatment EX 220ml and No-Wash Treatment EX 250ml
The Damage Therapy Treatment EX 220ml is a rinse-off conditioner applied after shampooing. Apply it to towel-damp (not dripping) hair, focusing on mid-lengths and ends where damage is highest, and leave it on for 2-5 minutes before rinsing. Heat from a shower cap or warm towel wrap during the wait time increases ingredient penetration slightly. The 220ml size supports regular weekly use for medium-length hair for approximately 2-3 months.
The Damage Therapy No-Wash Treatment EX 250ml is a leave-in version applied to towel-dried hair before drying. It provides ongoing heat protection and conditioning between wash days. Apply a small amount evenly through mid-lengths and ends-avoid the root area to prevent buildup and limpness at the scalp. At 250ml, the no-wash treatment is generously sized for a leave-in product. It is the step that bridges wash days and extends the protective effect of the rinse-off treatment without requiring a shower.
Damage Therapy Hair Oil 65ml
The Damage Therapy Hair Oil 65ml is applied after the no-wash treatment or on dry hair as a finishing step. It adds a sealing layer over the conditioning treatment, smoothing the cuticle and adding visible shine. Hair oils used this way also reduce static and help control frizz in humid conditions. A 65ml bottle is the standard size for a hair finishing oil-it is small enough to carry in a bag but large enough for consistent use over several months when you apply 2-4 drops per use.
For very damaged or color-treated hair, apply the oil to damp hair before blow-drying as an additional layer of heat protection. Work it through the ends first, then lightly distribute any residue through the mid-lengths. Applying oil too close to the roots can make hair look greasy, particularly on fine or oily scalp types-stay at least 3-5 cm from the root zone.
Damage Therapy Scalp Scaling Ampoule 50ml
The Damage Therapy Scalp Scaling Ampoule 50ml is a pre-wash scalp treatment. It addresses buildup-product residue, sebum, and dead skin cells-that accumulates on the scalp and can impede healthy hair growth and shampoo effectiveness. Scalp scaling ampoules typically use gentle acids or enzymatic agents to loosen this buildup before the shampoo cleanses it away.
Apply the ampoule to a dry or slightly damp scalp before shampooing: section the hair, apply to the scalp in sections, massage gently for 2-3 minutes, then wait 5-10 minutes before rinsing and proceeding to shampoo. Use it once a week or every two weeks depending on how much product buildup you accumulate. People who use dry shampoo frequently or who have oily scalps benefit most from regular scalp scaling. At 50ml, the ampoule is a concentrated product that lasts several months at weekly use.
Damage Therapy Hair Milk 160ml (2ea)
The Damage Therapy Hair Milk 160ml (2ea) is a lightweight, milky leave-in treatment. Unlike the heavier no-wash treatment, hair milks have a water-forward formula that provides hydration without weight-they suit fine or medium-density hair that can be dragged down by heavier creams or oils. The 2ea format (two 160ml bottles) provides value and a consistent supply for daily leave-in application.
Apply to towel-dried hair before styling. Work through the mid-lengths and ends, comb through to distribute evenly, then style as usual. The milk texture absorbs quickly without leaving residue, which makes it suitable for humid conditions or for people whose hair frizzes quickly when any product sits on the surface too long. For coarse or high-porosity hair that needs more weight, layer the hair milk with a small amount of the Damage Therapy Hair Oil to get both hydration and sealing.
Algae Therapy Mineral and Sea Salt Therapy sub-lines
Three additional products in this collection extend beyond the core Damage Therapy name: the Algae Therapy Mineral Shampoo 500ml, Algae Therapy Mineral No-Wash Treatment 150ml, and Sea Salt Therapy Treatment 235ml. The Algae Therapy sub-line uses mineral and algae extract for hydration-often suited to dry or dehydrated scalp conditions alongside damaged strands. The Mineral No-Wash Treatment at 150ml is a lighter leave-in compared to the Damage Therapy No-Wash Treatment EX 250ml.
The Sea Salt Therapy Treatment 235ml uses sea salt minerals and is typically aimed at adding volume and texture alongside repair-useful for hair that has been over-conditioned and has lost body, or for scalp health maintenance. This product is a treatment rather than a shampoo, so it sits in the rinse-off step after shampooing. These three products can be alternated with the core Damage Therapy line to address different scalp and strand conditions on different wash days.
Building a full wash-day routine with GROWUS Damage Therapy
A complete wash-day routine using the GROWUS Damage Therapy collection: pre-wash scalp scaling with the Scalp Scaling Ampoule 50ml (once a week) → shampoo with the Damage Therapy Shampoo EX → rinse-off treatment with the Damage Therapy Treatment EX 220ml for 2-5 minutes → rinse thoroughly → towel-dry → apply the No-Wash Treatment EX 250ml through mid-lengths and ends → seal with 2-3 drops of the Damage Therapy Hair Oil 65ml → style.
On days when you skip the scalp scaling, the routine shortens to: shampoo → treatment → no-wash treatment → oil. The Hair Milk 160ml can replace the oil on humid days or when you want a lighter finish. For scalp-focused weeks, swap the shampoo for the Algae Therapy Mineral Shampoo and the rinse-off treatment for the Sea Salt Therapy Treatment to target mineral replenishment alongside damage repair. This rotation keeps the routine from becoming monotonous and addresses different aspects of hair and scalp health in turn.
FAQ
Frequently asked questions
FAQ
Frequently asked questions
Will the Damage Therapy Treatment EX 220ml help with bleached hair that breaks easily?
Yes. The Damage Therapy Treatment EX is formulated for structurally weakened hair, which includes bleached hair. Bleaching removes pigment by oxidizing the hair's cortex, which simultaneously breaks protein bonds and raises the cuticle. The treatment contains conditioning agents that fill in cuticle gaps and help restore surface smoothness, reducing breakage at the ends. For heavily bleached hair, apply the treatment with a wide-tooth comb to distribute it evenly, then cover with a shower cap for 5-10 minutes of dwell time before rinsing. Consistent weekly use over 4-8 weeks produces noticeable improvement in elasticity and reduced snapping when combing.
What is the difference between the Damage Therapy No-Wash Treatment EX 250ml and the Damage Therapy Hair Milk 160ml?
The No-Wash Treatment EX 250ml has a thicker, creamier texture and a higher concentration of conditioning agents-it is suited to medium to coarse, dry, or chemically damaged hair that needs substantial leave-in conditioning. The Hair Milk 160ml is a lighter water-based formula that provides hydration without weight-better suited to fine, straight, or lightly damaged hair where a heavy leave-in would flatten volume. Both are applied to towel-dried hair before styling. If you have thick, curly, or very porous hair, the No-Wash Treatment will give more noticeable hold and softness. If your hair is fine or color-treated but not heavily damaged, the Hair Milk is the less-is-more option.
How often should I use the Damage Therapy Scalp Scaling Ampoule 50ml?
Once a week is suitable for most scalp types. If your scalp is oily and you use dry shampoo or styling products daily, scaling twice a week can help manage buildup. If your scalp is dry or sensitive, once every two weeks is a safer starting point-scaling too often on a dry scalp can cause tightness or irritation. The ampoule at 50ml gives approximately 10-15 applications at weekly use, making it a two to four-month supply depending on frequency. Apply to dry or slightly damp scalp, massage gently, wait 5-10 minutes, then shampoo as normal.
Does the Damage Therapy Hair Oil 65ml provide heat protection for blow-drying or flat ironing?
Hair oils can provide some protection against heat by forming a surface barrier that slows heat transmission to the cortex, but the primary purpose of the Damage Therapy Hair Oil is conditioning and finishing rather than high-heat protection. For flat ironing above 180°C or intensive blow-drying, a dedicated heat protectant with a declared heat protection temperature rating is more reliable. You can layer: apply the No-Wash Treatment EX as the base leave-in for conditioning, then use a separate heat protectant before tool use, and finish with the Hair Oil once the hair is cool and dry to add shine and smoothness. The oil is most effective as a finishing and sealing step rather than as the sole heat barrier.
When should I reach for the Sea Salt Therapy Treatment 235ml instead of the Damage Therapy Treatment EX?
The Sea Salt Therapy Treatment is suited to hair that feels over-conditioned, heavy, or limp-often a problem when rich conditioning treatments are used every wash day without breaks. Sea salt provides a light cleansing and volumizing effect alongside the conditioning, which helps reset the balance. If your hair is chemically damaged and brittle, stay with the Damage Therapy Treatment EX as the primary rinse-off treatment. If your hair feels weighed down after several weeks of intensive conditioning, alternate the Sea Salt Therapy Treatment in on some wash days to restore bounce and movement. It can also be used by people whose primary concern is scalp health and volume rather than structural damage repair.
Is the Algae Therapy Mineral Shampoo 500ml suitable for a dry or flaky scalp?
Yes. The Algae Therapy Mineral Shampoo is formulated with algae extract and mineral ingredients aimed at scalp hydration and balance, which makes it a good option for dry or sensitized scalp conditions. It is gentler in its cleansing approach compared to shampoos focused purely on damage repair, and the mineral component helps maintain scalp moisture balance. For flaky scalp caused by dryness rather than dandruff (seborrheic dermatitis), this shampoo is appropriate. If flaking is significant and persistent, it may indicate a scalp condition that needs a dedicated medicated shampoo or dermatologist evaluation-the Algae Therapy line addresses general scalp care, not clinical scalp conditions.
Is the Damage Therapy Shampoo EX 500ml safe for color-treated hair?
Damage-focused shampoos from Korean professional brands typically use sulfate-moderated surfactant systems specifically to preserve color-treated hair-aggressive sulfates strip color faster. The Damage Therapy Shampoo EX is designed for damaged hair, which overlaps substantially with color-treated hair, and its formula is gentler on the strand than a typical clarifying shampoo. That said, no shampoo is fully color-safe in the sense that washing always causes some color molecule loss over time. Washing less frequently (every 2-3 days rather than daily) and rinsing with cool water extend color vibrancy more than shampoo choice alone. The Damage Therapy Shampoo EX is among the better options for color-treated hair in the GROWUS line.
Are GROWUS products on skinsli the same as what salons use in Korea?
GROWUS is a Korean professional hair care brand whose products are used in professional settings in Korea. Skinsli sources GROWUS from Korean B2B wholesale channels and imports them for US customers. The products on skinsli are the same formulations sold in Korea-they carry original Korean labeling and are not relabeled or reformulated versions. Professional Korean hair care brands frequently make their full range available for consumer purchase online in Korea, which is how the home-use sizes (500ml shampoo, 65ml oil, 160ml hair milk) sit alongside the professional volumes. All GROWUS products on skinsli are genuine.