Good Molecules
Good Molecules Hyaluronic Acid Serum
No known risks99/100
Good Molecules
5% Niacinamide Serum With Ectoin
Serums
No higher-risk flags in the assessed ingredients. This is a screening result, not a guarantee of pregnancy safety.
14 of 14 ingredients rated
Is it suitable during pregnancy?
MamaSkin rates the recorded formula for Good Molecules 5% Niacinamide Serum With Ectoin as No known risks (99/100). This screening result is not a guarantee of safety for every pregnancy.
Why this rating?
No higher-risk ingredient flags are shown in the assessed entries. Ingredients without a matched rating are marked Not assessed, not No known risks.
14 of 14 ingredient entries on this page have a recorded score, evidence summary and source text. That describes documentation coverage, not proof that the finished formula has been clinically tested during pregnancy.
How we assess productsIngredient breakdown
The recorded formula, with evidence behind each rating. Unmatched ingredients are marked Not assessed in grey.
Ingredient ratings and evidence
Higher-risk flags first. Open an ingredient for evidence.
Water
No known risks
Water (Aqua) is the standard purified water used as a cosmetic solvent. It has no pregnancy-specific risk in normal topical use.
Sources: https://pubchem.ncbi.nlm.nih.gov/compound/Water, https://single-market-economy.ec.europa.eu/sectors/cosmetics/cosmetic-ingredient-database/cosing-glossary-ingredients_en
Niacinamide
No known risks
Niacinamide (vitamin B3) is widely used for barrier support and tone/texture benefits, and is generally considered safe in pregnancy and breastfeeding when used topically at cosmetic concentrations.
Sources: CIR; EU/UK Cosmetics Regulation
Dipropylene Glycol
No known risks
Dipropylene glycol is used as a solvent and carrier in cosmetics; topical exposure is low and it has no known pregnancy or breastfeeding concerns at cosmetic concentrations.
Sources: CIR; EU/UK Cosmetics Regulation
1,2-Hexanediol
No known risks
1,2-Hexanediol is commonly used as a solvent and preservative booster; topical exposure is low and it has no known pregnancy or breastfeeding concerns at cosmetic concentrations, though very sensitive skin may occasionally react.
Sources: CIR; EU/UK Cosmetics Regulation
Acetyl Glucosamine
No known risks
An amino-sugar derivative used for skin conditioning and hydration. Cosmetic safety reviewers concluded that acetyl glucosamine is safe in current practices when formulated to be non-irritating. No pregnancy-specific concern was identified for normal topical cosmetic exposure.
Sources: CIR: Safety Assessment of Glucosamine Ingredients as Used in Cosmetics https://www.cir-safety.org/supplementaldoc/safety-assessment-glucosamine-ingredients-used-cosmetics-1
Show all 14 ingredients
Glycerin
No known risks
Glycerin is a widely used humectant that supports hydration and the skin barrier, with a long safety record and no known pregnancy or breastfeeding concerns in topical cosmetic use.
Sources: CIR; EU/UK Cosmetics Regulation
Ectoin
No known risks
A small natural osmolyte used to support hydration and the skin barrier. A systematic review of topical ectoin formulations in adults and children reported very good tolerability. Pregnancy-specific topical studies were not identified, but no reproductive or pregnancy-specific signal was found for normal cosmetic exposure.
Sources: PubMed: Topical Ectoine Application in Children and Adults, systematic review https://pubmed.ncbi.nlm.nih.gov/35038127/
Betaine
No known risks
Betaine is a humectant/osmolyte used to support hydration and reduce irritation potential in formulas; it is considered low concern with no known pregnancy or breastfeeding risks in topical cosmetic use.
Sources: CIR; EU/UK Cosmetics Regulation
Ammonium Acryloyldimethyltaurate/Vp Copolymer
No known risks
Polymer thickener used to stabilise emulsions. Large-molecule ingredient with low systemic absorption.
Sources: Cosmetic Ingredient Review (US); Scientific Committee on Consumer Safety (EU)
Xanthan Gum
No known risks
Natural polysaccharide thickener used for stability and texture. Not associated with pregnancy-specific concerns.
Sources: European cosmetics regulatory framework
Sodium Citrate
No known risks
Buffering and chelating ingredient used to control pH and formulation stability. Reviewed cosmetic safety sources support normal topical use, with no pregnancy- or breastfeeding-specific topical signal identified in the material reviewed.
Sources: CIR: Safety Assessment of Citric Acid, Inorganic Citrate Salts, and Alkyl Citrate Esters as Used in Cosmetics; EU CosIng / cosmetics regulatory inventory
Ethylhexylglycerin
No known risks
Preservative booster and skin-conditioning agent. Considered safe for cosmetic use with low systemic exposure when used as intended.
Sources: Scientific Committee on Consumer Safety (EU); Cosmetic Ingredient Review (US)
Tocopherol
No known risks
Vitamin E antioxidant used to protect oils and support the skin barrier. Not associated with pregnancy-specific concerns at cosmetic exposure.
Sources: Cosmetic Ingredient Review (US); Scientific Committee on Consumer Safety (EU)
Citric Acid
No known risks
pH adjuster used in small amounts to maintain product stability. Not associated with pregnancy-specific concerns.
Sources: Scientific Committee on Consumer Safety (EU); European cosmetics regulatory framework
Full recorded ingredient list
Water, Niacinamide, Dipropylene Glycol, 1,2-Hexanediol, Acetyl Glucosamine, Glycerin, Ectoin, Betaine, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Xanthan Gum, Sodium Citrate, Ethylhexylglycerin, Tocopherol, Citric Acid
Ingredient ratings refreshed 13 October 2026. Formulas vary by market and can change. Always compare with your packaging.
Questions about this assessment
Why does Good Molecules 5% Niacinamide Serum With Ectoin have a No known risks rating?
No higher-risk ingredient flags are shown in the assessed entries. Ingredients without a matched rating are marked Not assessed, not No known risks. The product score is a stored assessment, not a clinical safety guarantee.
Does the niacinamide rating cover every ingredient in this product?
No. Niacinamide appears in the recorded formula, but its individual rating applies to that ingredient, not automatically to the whole product. Check the other ingredient ratings, any grey Not assessed entries and the stored product assessment. A niacinamide percentage or a product name is not a substitute for checking the full list.
Has every ingredient in Good Molecules 5% Niacinamide Serum With Ectoin been assessed?
14 of 14 ingredient entries on this page have a recorded score, evidence summary and source text. That describes documentation coverage, not proof that the finished formula has been clinically tested during pregnancy.
Does this assessment apply to my Good Molecules 5% Niacinamide Serum With Ectoin?
Only if the ingredient list on your packaging matches the recorded formula shown here. Formulas can differ by market and change over time. Compare the full list, not just the product name; report a mismatch if it differs.
Does this pregnancy assessment also establish breastfeeding suitability?
No. This page presents a pregnancy-focused product assessment. Do not infer a breastfeeding conclusion from its score or label; breastfeeding requires a separate assessment of the formula and how it is used.
