scalp serum
lactic acid + hyaluronic acid
A weekly lactic-acid scalp step that lifts away product buildup, so your scalp feels fresh and hair looks fuller at the root. Size: 1.01 fl oz / 30 mL
$48 each
Best for: Flat or product-heavy roots and hair lacking volume
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- Lactic acid (AHA)
- Fragrance-free
- 100% natural origin
- Vegan + cruelty-free
scalp serum, at a glance.
- Lactic acid (AHA)
- Fragrance-free
- 100% natural origin
- Vegan + cruelty-free
hero ingredientlactic acidGently exfoliates and lifts product buildup, for a fresh-feeling scalp.
A fresh-feeling scalp, fuller-looking roots.
Dry shampoo buildup? Five minutes, once a week.
- Lifts away product buildup for a fresh-feeling scalp
- Weightless, fragrance-free and rinsed out after 3โ5 minutes
- Eight ingredients, 100% natural origin, COSMOS Natural certified
- Texture
- Light, clear fluid
- Finish
- Weightless; rinses out
- Scent
- Fragrance-free
- Best for
- Flat or product-heavy roots and hair lacking volume
- Good to know
- COSMOS Natural (Ecocert Greenlife) ยท 100% natural origin ยท Fragrance-free ยท Vegan ยท Cruelty-free ยท No parabens ยท No silicones ยท pH 4.0โ4.5
What each ingredient is there for.
Eight ingredients. No fragrance. Here's the whole list.
Dry shampoo, styling products and everyday life settle at the roots. Lactic acid, a gentle AHA and the second ingredient in the formula, exfoliates and lifts that buildup away.
Lactic acid
Gently exfoliates and lifts product buildup, for a fresh-feeling scalp.
- Sodium hyaluronateAdds light hydration for a comfortable feel.
- GlycerinHydrates.
Full ingredient list
Aqua/Water, Lactic Acid, Pentylene Glycol, Potassium Hydroxide, Butylene Glycol, Glycerin**, Sodium Hyaluronate, Urtica Dioica (Nettle) Leaf Extract*
- * ingredients from organic farming
- ** made using organic ingredients
100% of the formula is of natural origin. Free from parabens, mineral oils, silicones, PEG and microplastics. Made in the EU.
what we leave out
Because a short list is a kind one.
- added fragrance
- animal ingredients
- animal testing
- parabens
- silicones
COSMOS Natural (Ecocert Greenlife) ยท 100% natural origin ยท pH 4.0โ4.5
how it compares
The three steps of the Hair Care routine, side by side.
| Product | step 1 ยท this one scalp serum | step 2 keratin hair mask | step 3 keratin hair mist |
|---|---|---|---|
| Key ingredients | lactic acid + hyaluronic acid | hydrolyzed keratin + shea butter | hydrolyzed keratin + lactic acid |
| Texture | Light, clear fluid | Rich cream | Fine leave-in mist |
| Finish | Weightless; rinses out | Natural | Weightless |
| When | 1โ2 times a week, before washing | weekly, or as needed | after washing, on damp hair |
| Size | 1.01 fl oz / 30 mL | 5.75 fl oz / 170 mL | 3.38 fl oz / 100 mL |
| Price | $48 | $46 | $38 |
How to use your Scalp Serum
Once or twice a week, before you wash, part your dry hair into sections and apply along each part. Give it three to five minutes, then rinse and wash as usual. A small reset that makes the rest of the week feel lighter.
- Part dry hair and apply to the scalp.
- Leave on for 3โ5 minutes.
- Rinse well, then wash as usual. Use once or twice a week, no more.
- Lactic acid is an AHA: on sunny days after use, wear a hat or follow with SPF on any exposed scalp.
When: Once or twice a week, on a dry scalp before you wash.
Questions, answered
About Scalp Serum
How often should I use it?
Once or twice a week, no more. It's a weekly step, not a daily one.
Do I use it on wet or dry hair?
On a dry scalp. Part your hair, apply, leave for 3โ5 minutes, then rinse and wash as usual.
Does it have a scent?
No. It's fragrance-free, with no Parfum or essential oils in the formula.
Is lactic acid harsh?
It's a gentle AHA in a short, weightless formula at pH 4.0โ4.5, rinsed off after a few minutes. As with any AHA, wear a hat or follow with SPF on exposed scalp on sunny days afterwards.
What will I notice?
We only talk about how hair looks and feels. It lifts away buildup for a fresh-feeling scalp and fuller-looking roots.
What if my scalp is easily bothered?
It's fragrance-free with eight ingredients, rinsed off after 3โ5 minutes. Use it once or twice a week at most, and patch test first.
Do I really need to exfoliate my scalp?
If roots look flat or feel heavy from products, a weekly step that lifts buildup can make the scalp feel fresh and roots look fuller.
Is it worth another hair step?
It's once or twice a week and takes five minutes before you wash.
How much is shipping?
Free US shipping on orders of $35+. Questions about delivery? Email hello@exokiss.com.
read the guide
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The packaging feels thoughtful and looks lovely on my shelf. Very happy with my choice.
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I appreciate having clear directions right on the packaging. Very happy with my choice.
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The simple presentation is exactly my style. Very happy with my choice.
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Everything about the design feels nicely considered. Very happy with my choice.
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The product information was straightforward and easy to understand. Very happy with my choice.
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A lovely addition to my everyday routine. Very happy with my choice.
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Lovely presentation overall. I would like a larger print size on the label.
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The understated packaging is a real highlight for me. Very happy with my choice.
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A nice addition to my routine. More detailed instructions would be helpful.
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The overall presentation made a great first impression. Very happy with my choice.
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I like the simple design. I would appreciate another size option.
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I prefer a simple routine and this fits in beautifully. Very happy with my choice.
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I enjoyed taking a little extra time for myself with this. Very happy with my choice.
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The packaging looks lovely. A clearer guide to the range would make choosing easier.
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I appreciate the attention to the small details. Very happy with my choice.
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This brought a welcome touch of care to my evening routine. Very happy with my choice.
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The information on the product page helped me make my choice. Very happy with my choice.
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I was drawn to the minimal look and thoughtful presentation. Very happy with my choice.
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The design feels polished and easy to live with. Very happy with my choice.
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I like that the directions are concise and practical. Very happy with my choice.
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This is the sort of simple everyday luxury I enjoy. Very happy with my choice.
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A good overall impression. I would like more comparison information on the product page.
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The presentation feels thoughtful. A little more guidance for beginners would be useful.
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The overall experience felt easy from the beginning. Very happy with my choice.
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I am happy with how naturally this fits into my routine. Very happy with my choice.
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The packaging has a soft and elegant look that I love. Very happy with my choice.
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I found the product details helpful when deciding what to choose. Very happy with my choice.
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A thoughtful choice for someone who enjoys a little self-care. Very happy with my choice.
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I enjoyed adding this to my routine. I would appreciate a more detailed FAQ.
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The presentation feels special without being overdone. Very happy with my choice.
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I like the balance of a pretty design and clear information. Very happy with my choice.
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This makes my usual routine feel a little more considered. Very happy with my choice.
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The look and feel of the packaging really appeal to me. Very happy with my choice.
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I appreciate a product that comes with straightforward guidance. Very happy with my choice.
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A lovely option for keeping things simple. Very happy with my choice.
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The small design touches give it a special feel. Very happy with my choice.
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I enjoyed making a little space for this in my day. Very happy with my choice.
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The presentation is elegant and the directions are easy to follow. Very happy with my choice.
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The design is attractive. Bigger text on the directions would be welcome.
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It was easy to understand how to work this into my routine. Very happy with my choice.
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The simple styling makes this feel timeless. Very happy with my choice.
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I am pleased with the care put into the overall presentation. Very happy with my choice.
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The packaging feels thoughtful and looks lovely on my shelf. I would happily choose this again.
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A lovely concept overall. I would like a more detailed guide to when to use it.
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I appreciate having clear directions right on the packaging. I would happily choose this again.
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The simple presentation is exactly my style. I would happily choose this again.
-
Everything about the design feels nicely considered. I would happily choose this again.
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The product information was straightforward and easy to understand. I would happily choose this again.
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A lovely addition to my everyday routine. I would happily choose this again.
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I like the understated look. More photos of the packaging would help with choosing.
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I like how easy this is to fit into a busy morning. I would happily choose this again.
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The understated packaging is a real highlight for me. I would happily choose this again.
-
It feels like a little treat without making my routine complicated. I would happily choose this again.
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The overall presentation made a great first impression. I would happily choose this again.
-
I prefer a simple routine and this fits in beautifully. I would happily choose this again.
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The instructions made it easy to know where to start. I would happily choose this again.
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The clean design caught my eye immediately. I would happily choose this again.
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I enjoyed taking a little extra time for myself with this. I would happily choose this again.
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The overall presentation is appealing. I would welcome a smaller trial option.
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An enjoyable addition to my day. A clearer step-by-step guide would make it even better.
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The packaging is pretty enough to leave out on display. I would happily choose this again.
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I appreciate the attention to the small details. I would happily choose this again.
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This brought a welcome touch of care to my evening routine. I would happily choose this again.
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The clean styling works well. I would like more information about the packaging materials.
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A nice first impression. A simple comparison chart would be a useful addition.
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The presentation has a lovely calm feel to it. I would happily choose this again.
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The information on the product page helped me make my choice. I would happily choose this again.
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I was drawn to the minimal look and thoughtful presentation. I would happily choose this again.
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The design feels polished and easy to live with. I would happily choose this again.
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I appreciate the thoughtful design. More detail about where it fits in a routine would help.
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I like that the directions are concise and practical. I would happily choose this again.
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The presentation is polished. I would like to see more close-up photos before choosing.
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This is the sort of simple everyday luxury I enjoy. I would happily choose this again.
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The overall experience felt easy from the beginning. I would happily choose this again.
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I am happy with how naturally this fits into my routine. I would happily choose this again.
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The packaging has a soft and elegant look that I love. I would happily choose this again.
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A pleasant overall experience. The label could be a little easier to read.
-
I found the product details helpful when deciding what to choose. I would happily choose this again.
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A thoughtful choice for someone who enjoys a little self-care. I would happily choose this again.
-
The presentation feels special without being overdone. I would happily choose this again.
-
I like the balance of a pretty design and clear information. I would happily choose this again.
-
This makes my usual routine feel a little more considered. I would happily choose this again.
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The look and feel of the packaging really appeal to me. I would happily choose this again.
-
I appreciate a product that comes with straightforward guidance. I would happily choose this again.
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A lovely option for keeping things simple. I would happily choose this again.
-
The small design touches give it a special feel. I would happily choose this again.
-
I enjoyed making a little space for this in my day. I would happily choose this again.
-
I like the look of the range. A concise guide for first-time shoppers would be helpful.
-
The presentation is elegant and the directions are easy to follow. I would happily choose this again.
-
The product information was useful. A little more detail would make the decision easier.
-
A lovely everyday idea. I would appreciate a wider choice of sizes.
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It was easy to understand how to work this into my routine. I would happily choose this again.
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The simple styling makes this feel timeless. I would happily choose this again.
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I am pleased with the care put into the overall presentation. I would happily choose this again.