NINELESS B-Boost 1% Kojic Acid Serum is a serum with 40 ingredients. It is rated "use caution" in pregnancy because it contains Kojic Acid. Common allergens: niacinamide.
Sensitive skin: niacinamide Why?
- niacinamide: A popular, well-tolerated ingredient that can cause redness or flushing for a few people, especially at high strengths.
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 serum is a concentrated treatment used before moisturizer.
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 Niacinamide (no. 2), Tranexamic Acid (no. 7), Kojic Acid (no. 9), Glutathione (no. 16)
Targets fine lines and firmness
Ingredients used for fine lines, firmness, and smoother texture.
From Acetyl Hexapeptide-8 (no. 29), Copper Tripeptide-1 (no. 30), Hexapeptide-9 (no. 32), Nonapeptide-1 (no. 33)
Hydrates
Draws water into the skin, so it feels plumper and less tight.
From Glycerin (no. 5), Panthenol (no. 6), Sodium Hyaluronate (no. 27)
Calms and soothes
Ingredients used to calm redness and irritation.
From Panthenol (no. 6), Dipotassium Glycyrrhizate (no. 26)
Worked out from the ingredient list. Labels don't show amounts, so how well it works depends on the formula and your skin.
Is NINELESS B-Boost 1% Kojic Acid Serum safe to use during pregnancy?
Jouaxia rates NINELESS B-Boost 1% Kojic Acid Serum "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 NINELESS B-Boost 1% Kojic Acid Serum contain fragrance or other common allergens?
Yes. NINELESS B-Boost 1% Kojic Acid Serum contains niacinamide, 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)
Gentle for kids
No ingredients we flag for children: no anti-aging actives, strong acids, fragrance, or essential oils.
Teens (ages 12–17)
Teen-friendly
No ingredients we flag for teens. Acne treatments like benzoyl peroxide and salicylic acid are fine.
Helps with acne: Niacinamide.
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 NINELESS B-Boost 1% Kojic Acid Serum?
40 ingredients. The ones we flag come first, with their place on the label. Select an ingredient to see what it does.
Kojic Acid no. 9 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).
Niacinamide no. 2 on the label
Sensitive skin: niacinamide.
38 other ingredients: nothing flaggedShow
- 1.Water
- 3.Methylpropanediol
- 4.Butylene Glycol
- 5.Glycerin
- 6.Panthenol
- 7.Tranexamic Acid
- 8.1,2-Hexanediol
- 10.Hippophae Rhamnoides Fruit Extract
- 11.Dipropylene Glycol
- 12.Hydroxyacetophenone
- 13.Caprylyl Glycol
- 14.Arginine
- 15.Carbomer
- 16.Glutathione
- 17.Glycereth-25 PCA Isostearate
- 18.Glycereth-26
- 19.Coptis Japonica Root Extract
- 20.Disodium EDTA
- 21.Betaine
- 22.Astragalus Membranaceus Root Extract
- 23.Scutellaria Baicalensis Root Extract
- 24.Theobroma Cacao (Cocoa) Seed Extract
- 25.Dextrin
- 26.Dipotassium Glycyrrhizate
- 27.Sodium Hyaluronate
- 28.Tocopherol
- 29.Acetyl Hexapeptide-8
- 30.Copper Tripeptide-1
- 31.Dipeptide Diaminobutyroyl Benzylamide Diacetate
- 32.Hexapeptide-9
- 33.Nonapeptide-1
- 34.Palmitoyl Hexapeptide-12
- 35.Palmitoyl Pentapeptide-4
- 36.Palmitoyl Tetrapeptide-7
- 37.Palmitoyl Tripeptide-1
- 38.Palmitoyl Tripeptide-5
- 39.Pentapeptide-3
- 40.Tripeptide-1
Ingredient list from YesStyle. Formulas change, so check the packaging of the product you buy.