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Act+Acre

Microbiome Cooling Scalp Serum For Dry Itchy Scalp + Loose Flakes

4.8 · 436 reviews
7,222 ₽

What it is: Powered by Amino M³ Complex™, this cooling scalp serum balances the scalp microbiome to soothe dry scalp itch and reduce loose dandruff flakes.Hair Texture: Straight, Wavy, Curly, and CoilyHair Type: Fine, Medium, and ThickHair Concerns:- Dandruff- Flaky/Dry Scalp- Oily ScalpKey Benefits: - Relieves a dry, itchy scalp in 30 seconds- Reduces loose flakes and scales- Relieves and prevents scalp sensitivity and discomfortHighlighted Ingredients:- Amino M³ Complex™: Clinically proven ingredient blend that balances scalp to reduce dry itch.- Peppermint Oil: Instantly cools and relieves the scalp.- Fireweed Extract: Combats and clears away loose flakes and scales.Ingredient Callouts: Free of parabens, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, sulfates SLS & SLES, triclocarban, triclosan, and contains less than one percent synthetic fragrance. It is also gluten-free, cruelty-free, and comes in recyclable packaging.What Else You Need to Know: Amino M³ Complex™ is a blend of eight clinically backed ingredients shown to balance the scalp microbiome, reducing itch, flakes, inflammation, and irritation while preventing scalp conditions and flare ups.Fragrance Description: This product is fragrance-free.Clinical Results: In a 14-day consumer panel with 10 women and men experiencing dandruff, scalp psoriasis, scalp eczema, seborrheic dermatitis, and general flaking:- 91% agreed their scalp was instantly cooled- 91% agreed the serum relieved scalp discomfort- 90% agreed their scalp felt refreshedClean at Sephora is our commitment to offering effective products without certain ingredients, such as parabens, sulfates, phthalates, and mineral oils. Learn more here.

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What it is: Powered by Amino M³ Complex™, this cooling scalp serum balances the scalp microbiome to soothe dry scalp itch and reduce loose dandruff flakes.Hair Texture: Straight, Wavy, Curly, and CoilyHair Type: Fine, Medium, and ThickHair Concerns:- Dandruff- Flaky/Dry Scalp- Oily ScalpKey Benefits: - Relieves a dry, itchy scalp in 30 seconds- Reduces loose flakes and scales- Relieves and prevents scalp sensitivity and discomfortHighlighted Ingredients:- Amino M³ Complex™: Clinically proven ingredient blend that balances scalp to reduce dry itch.- Peppermint Oil: Instantly cools and relieves the scalp.- Fireweed Extract: Combats and clears away loose flakes and scales.Ingredient Callouts: Free of parabens, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, sulfates SLS & SLES, triclocarban, triclosan, and contains less than one percent synthetic fragrance. It is also gluten-free, cruelty-free, and comes in recyclable packaging.What Else You Need to Know: Amino M³ Complex™ is a blend of eight clinically backed ingredients shown to balance the scalp microbiome, reducing itch, flakes, inflammation, and irritation while preventing scalp conditions and flare ups.Fragrance Description: This product is fragrance-free.Clinical Results: In a 14-day consumer panel with 10 women and men experiencing dandruff, scalp psoriasis, scalp eczema, seborrheic dermatitis, and general flaking:- 91% agreed their scalp was instantly cooled- 91% agreed the serum relieved scalp discomfort- 90% agreed their scalp felt refreshedClean at Sephora is our commitment to offering effective products without certain ingredients, such as parabens, sulfates, phthalates, and mineral oils. Learn more here.

Customer reviews

1.0
verified purchase
NO Way...

Agreed. Mold smell immediately present. Ordered this since everyone raved. Need something low odor for my itchy sensitive scalp. I can still smell (2 drops) on my scalp an hour later. How does this get 5 stars when others rate lower ? I am smell sensitive, need something for my scalp... but will not be able to use if it SMELLS primarily like MOLD (even if it did work). Sending back.

9/12/2026
5.0
verified purchase

This cooling serum is a total game changer for my sensitive, itchy scalp. The instant cooling sensation is so refreshing and calming, and no more irritation or tightness. It feels lightweight, absorbs quickly, and doesn’t leave any greasy residue. After just a few uses, my scalp feels balanced, healthy, and way less reactive.

4/9/2026
5.0
verified purchase

I recently tried the Act+Acre Microbiome Cooling Scalp Serum and after just one use, I really enjoyed how refreshing it felt on my scalp. The cooling sensation was very noticeable but not overpowering, and it made my scalp feel calm and soothed. The texture is lightweight and absorbs quickly without leaving my hair greasy. I also liked how easy it was to apply directly to my scalp with the dropper. My hair still felt soft and clean afterward, which I appreciated. So far, I’m excited to keep using it to see the long-term benefits for my scalp health.

4/2/2026
3.0
verified purchase
Strong peppermint or Teatree odor

I got this thinking it would be a better version of my Daily Hydro but the peppermint oil left a very smelly odor and residue that I personally dislike. it did help w/ a dry itchy scalp though. Just the smell is very strong.

4/1/2026
5.0
verified purchase
My scalp loves it

This microbiome cooling scalp serum from Act+Acre is just what I needed for my itchy flaky scalp. I suffer with dandruff and this serum gives a nice cooling sensation, and it actually helps reduce the amount of flakes on my scalp. I would recommend this to everyone who needs help like me.

3/24/2026
5.0
verified purchase
Refreshing & Lightweight Scalp Care

I really enjoy how fresh and comfortable this scalp serum feels. The cooling effect is noticeable but not overwhelming, and the formula feels light without making my hair look oily. My scalp feels soothed, refreshed, and more balanced after use. It is simple to apply and fits nicely into my regular hair care routine.

3/17/2026
1.0
verified purchase
Horrible Smell

I don't know how this can have any positive reviews with the awful smell. I couldn't stand it and had to wash my hair again after applying it.

3/2/2026
2.0
verified purchase
Smells like mildew and mothballs (but works!)

I get a really dry and itchy scalp and was desperate for something to soothe it so I gave this a try. Unfortunately, I noticed immediately after opening the bottle that it smelled like minty mildew but I thought I’d still give it a chance. The smell only got worse after I put in on my scalp because I couldn’t stop smelling it. It smells like mothballs and mildew and even though it worked to relieve my itchiness I had to return it the same day it was so unbearable. I’m giving it 2 stars since it worked at doing what it says it does but I can’t give it more than that because the smell is criminal.

1/27/2026
2.0
verified purchase
Smells very bad

It smells like moth balls? I’ve had to wash my hair 3 times to get out the smell and I can still smell it. Confused cause not many other people are talking about how badly this makes your hair smell

1/1/2026
5.0
verified purchase
So glad I found this product!

So glad I found this product! Due to harsh hair products my scalp was irritated and after one use I feel healed! I wish I had found it sooner. Must buy. No fragrance but slight menthol aroma that is very soothing. soothing.

8/23/2025