Kosé One By Kose Melanoshot W Brightening Mask is a mask with 45 ingredients. It is rated "use caution" in pregnancy because it contains Kojic acid. Common allergens: fragrance, alcohol denat.
Sensitive skin: fragrance, alcohol denat. Why?
- fragrance: Fragrance or parfum, and scent ingredients listed by name, such as linalool and limonene. The most common cause of skincare allergies; worth avoiding if you have eczema, rosacea, or very sensitive skin.
- alcohol denat.: Denatured alcohol, which helps products feel light and dry fast but can dry out or sting dry and sensitive skin. Fatty alcohols like cetyl alcohol are different and aren't flagged.
These flags don't affect the pregnancy rating. They point out the ingredients most likely to make skincare sting, itch, or cause a rash. If your skin is sensitive, or one of them has bothered you before, you may want to skip the product or patch-test it first. Most people use them without a problem.
How we flag ingredientsWhat does it do?
A mask is a treatment you leave on for a while, then rinse, peel, or wipe off.
Based on its ingredients, it's made to:
Evens out skin tone
Used to fade dark spots and marks and even out skin tone over time.
From Kojic acid (no. 1)
Hydrates
Draws water into the skin, so it feels plumper and less tight.
From polyoxyethylene glycerin (26E.O.) (no. 5), concentrated glycerin (no. 6), sodium acetylated hyaluronate (no. 13)
Calms and soothes
Ingredients used to calm redness and irritation.
From mugwort extract (no. 22)
Antioxidant protection
Antioxidants help defend skin from everyday damage, such as from sun and pollution.
From trans-resveratrol (no. 17)
Worked out from the ingredient list. Labels don't show amounts, so how well it works depends on the formula and your skin.
Is Kosé One By Kose Melanoshot W Brightening Mask safe to use during pregnancy?
Jouaxia rates Kosé One By Kose Melanoshot W Brightening Mask "Use caution" for pregnancy because it contains Kojic acid. Kojic acid: There's no human pregnancy data, so a 2022 review doesn't recommend it until more is known. Little is absorbed and animal studies report no harm, and the EU limits it to 1% (Putra et al. 2022, EU Regulation 2024/996). This is general information, not medical advice. Check with your OB-GYN or dermatologist.
Does Kosé One By Kose Melanoshot W Brightening Mask contain fragrance or other common allergens?
Yes. Kosé One By Kose Melanoshot W Brightening Mask contains fragrance, alcohol denat, which can bother sensitive skin. This doesn't affect its pregnancy rating, and most people use these ingredients without a problem; if your skin is sensitive or you've reacted to one before, patch-test it first or look for an alternative.
Is it OK for kids and teens?
Kids (ages 3–11)
Use with care
- Fragrance or essential oils (fragrance): Children's skin reacts to fragrance and essential oils more easily; fragrance-free products are the usual advice for kids, especially with eczema or sensitive skin.
Teens (ages 12–17)
Teen-friendly
No ingredients we flag for teens. Acne treatments like benzoyl peroxide and salicylic acid are fine.
General guidance from the ingredient list, not medical advice. For babies under 3, or skin problems that don't get better, ask a doctor. How we rate for kids and teens · Skincare for teens
What are the ingredients in Kosé One By Kose Melanoshot W Brightening Mask?
45 ingredients. The ones we flag come first, with their place on the label. Select an ingredient to see what it does.
Kojic acid no. 1 on the label
Use caution in pregnancy: Kojic acid. There's no human pregnancy data, so a 2022 review doesn't recommend it until more is known. Little is absorbed and animal studies report no harm, and the EU limits it to 1% (Putra et al. 2022, EU Regulation 2024/996).
ethanol no. 3 on the label
Sensitive skin: alcohol denat..
fragrance no. 44 on the label
Sensitive skin: fragrance.
42 other ingredients: nothing flaggedShow
- 2.purified water
- 4.dipropylene glycol
- 5.polyoxyethylene glycerin (26E.O.)
- 6.concentrated glycerin
- 7.1,3-butylene glycol
- 8.diglycerin
- 9.methylpolysiloxane
- 10.N-acetyl-L-hydroxyproline
- 11.dl-α-tocopherol
- 12.d-δ-tocopherol
- 13.sodium acetylated hyaluronate
- 14.Chinese quince extract
- 15.glycosyl trehalose/hydrogenated starch hydrolysate mixture
- 16.Japanese pepper extract
- 17.trans-resveratrol
- 18.phytoglycogen
- 19.peony extract
- 20.evening primrose extract
- 21.lily extract
- 22.mugwort extract
- 23.mulberry yellow extract
- 24.natural vitamin E
- 25.N-stearoyl-N-methyl Sodium lutaurate
- 26.N-lauroyl-L-glutamate di (phytosteryl, 2-octyldodecyl)
- 27.disodium edetate
- 28.ethyl oleate
- 29.xanthan gum
- 30.glycerin fatty acid ester
- 31.succinic acid
- 32.disodium succinate
- 33.propylene glycol dicaprate
- 34.cetostearyl alcohol
- 35.glyceryl tri-2-ethylhexanoate
- 36.sodium hydroxymethoxybenzophenone sulfonate
- 37.behenyl alcohol
- 38.polyoxyethylene sorbitan monooleate (20E.O.)
- 39.sorbitan monopalmitate
- 40.absolute ethanol
- 41.liquid paraffin
- 42.ethylparaben
- 43.methylparaben
- 45.caramel
Ingredient list from YesStyle. Formulas change, so check the packaging of the product you buy.