BYOMA Hydrating Serum by BYOMA
BYOMA

BYOMA Hydrating Serum

Serums

Safety score

Pregnancy-focused assessment

Low Risk79/100
Higher concernLower concern

One or more ingredients have a low-risk flag in MamaSkin's current assessment. Review the notes and your own circumstances.

Formula and assessment check

Ingredient safety review updated 22 January 2026. Product formulas can change, so compare the ingredients shown here with the packaging you have.

Report a formula mismatch

Ingredient breakdown

See how the listed formula falls across MamaSkin's pregnancy-focused risk bands.

26

No known risks

2

Low risk

0

Medium risk

0

High risk

Ingredients

Ingredients with a higher risk flag appear first, followed by the rest of the formula.

Lactic Acid

Low Risk

Endogenous alpha-hydroxy acid and humectant; at modest cosmetic concentrations (≈5% and below, and generally <10%) topical lactic acid is considered compatible with pregnancy. Main risks are local irritation and increased photosensitivity rather than systemic toxicity or fetal effects.

Sources: PubMed, U.S. National Library of Medicine (NLM); dermatology pregnancy skincare reviews

Dipotassium Glycyrrhizate

Low Risk

A purified glycyrrhizic-acid salt used as a soothing and skin-conditioning ingredient. Cosmetic safety reviewers concluded that dipotassium glycyrrhizate is safe in current cosmetic use and noted poor dermal absorption. MamaSkin nevertheless applies a cautious low-risk classification for consistency with the existing licorice family because high oral glycyrrhizin exposure has pregnancy-related concerns; this is not a topical contraindication.

Sources: CIR: Safety Assessment of Glycyrrhizic Acid and Derivatives https://cir-reports.cir-safety.org/view-attachment/?id=49a63435-8e74-ec11-8943-0022482f06a6

Water

No Known Risks
Show all (28)

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

Butylene Glycol

No Known Risks

Solvent and humectant commonly used in leave-on products. Not associated with pregnancy-specific concerns at cosmetic exposure levels.

Sources: Cosmetic Ingredient Review (US); Scientific Committee on Consumer Safety (EU)

Squalane

No Known Risks

Lightweight emollient used to support the skin barrier. Not associated with pregnancy-specific concerns at cosmetic exposure levels.

Sources: Cosmetic Ingredient Review (US); Scientific Committee on Consumer Safety (EU)

Sodium Stearoyl Glutamate

No Known Risks

Amino-acid-derived emulsifier and skin-conditioning support ingredient. Reviewed cosmetic ingredient references do not identify a pregnancy- or breastfeeding-specific concern for normal topical use.

Sources: CIR cosmetic ingredient safety references for amino acid alkyl amides/salts; EU CosIng / cosmetics regulatory inventory

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)

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

Ceramide NP

No Known Risks

Skin-identical barrier lipid used to support the stratum corneum and reduce dryness. 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 Ceramides as Used in Cosmetics; EU CosIng / cosmetics regulatory inventory

Caprylic/Capric Triglyceride

No Known Risks

Common emollient derived from fatty acids and glycerin. Used to soften skin and improve texture without pregnancy-specific concerns.

Sources: Cosmetic Ingredient Review (US); Scientific Committee on Consumer Safety (EU)

Cholesterol

No Known Risks

Skin-conditioning lipid used in barrier-support formulas, often alongside ceramides and fatty acids. Normal topical cosmetic use has no known pregnancy- or breastfeeding-specific concern identified in reviewed cosmetic references.

Sources: CIR cosmetic ingredient safety references for cholesterol and related sterols; EU CosIng / cosmetics regulatory inventory

Phytosphingosine

No Known Risks

Skin-conditioning lipid used in barrier-support formulas, commonly alongside ceramides and cholesterol. Reviewed cosmetic ingredient references do not identify a pregnancy- or breastfeeding-specific concern for normal topical use.

Sources: CIR cosmetic ingredient safety references for sphingolipids/skin-conditioning lipids; EU CosIng / cosmetics regulatory inventory

Stearic Acid

No Known Risks

Stearic acid is a fatty acid used to stabilise emulsions and improve texture; it is considered low concern in topical cosmetics with no known pregnancy or breastfeeding risks at typical concentrations.

Sources: CIR; EU/UK Cosmetics Regulation

Oleic Acid

No Known Risks

This naturally occurring fatty acid is used for emolliency, cleansing support or texture. The Cosmetic Ingredient Review concluded that assessed fatty acids are safe in current cosmetic use when formulated to be non-irritating and non-sensitizing; some can increase penetration of other formula ingredients.

Sources: CIR: Safety Assessment of Fatty Acids and Fatty Acid Salts as Used in Cosmetics https://cir-safety.org/supplementaldoc/safety-assessment-fatty-acids-fatty-acid-salts-used-cosmetic

Hydroxyacetophenone

No Known Risks

Hydroxyacetophenone is used as an antioxidant and preservative-support ingredient; it is generally considered low concern in topical cosmetic use with no known pregnancy or breastfeeding risks at typical concentrations.

Sources: CIR; EU/UK Cosmetics Regulation

Polyglyceryl-4 Oleate

No Known Risks

A polyglycerin fatty-acid ester used as an emulsifier, dispersant or emollient. Cosmetic safety reviewers concluded that the assessed polyglyceryl fatty-acid esters are safe in current practices when formulated to be non-irritating.

Sources: CIR: Polyglyceryl Fatty Acid Esters conclusion, IJT 42(Suppl. 2), 2023; December 2025 Quick Reference Table https://cir-safety.org/sites/default/files/QRT-Update-Dec2025.pdf

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

No Known Risks

Large polymer thickener, stabilizer and texture ingredient used in gels, creams and sunscreens. Systemic exposure from topical cosmetic use is expected to be low, with no pregnancy- or breastfeeding-specific concern identified in reviewed cosmetic references.

Sources: CIR cosmetic ingredient safety references for acrylates copolymers; EU CosIng / cosmetics regulatory inventory

Hydrogenated Lecithin

No Known Risks

Hydrogenated emulsifier used to support skin barrier feel. Not associated with pregnancy-specific concerns.

Sources: Cosmetic Ingredient Review (US)

Caprylyl Glycol

No Known Risks

Humectant and preservative booster used to support product stability. Low systemic exposure expected from topical cosmetic use.

Sources: Scientific Committee on Consumer Safety (EU); Cosmetic Ingredient Review (US)

Glyceryl Oleate

No Known Risks

A glycerol and oleic-acid ester used as an emulsifier and skin-conditioning ingredient. Cosmetic safety assessments and its well-characterized metabolic components support current cosmetic use without a pregnancy- or breastfeeding-specific concern from normal topical exposure.

Sources: CIR: Amended Safety Assessment of Monoglyceryl Monoesters https://www.cir-safety.org/sites/default/files/monoglyceryl%20monoesters.pdf; CIR ingredient record: Glyceryl Oleate https://cir-safety.org/ingredient/glyceryl-oleate

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)

Hydrogenated Rapeseed Alcohol

No Known Risks

Sorbitan Isostearate

No Known Risks

Emulsifier used to help oil and water phases remain mixed. Reviewed cosmetic safety sources support topical use in cosmetics; the main practical issue is irritation potential in some formulas rather than a pregnancy-specific concern.

Sources: CIR: Safety Assessment of Sorbitan Esters as Used in Cosmetics; EU CosIng / cosmetics regulatory inventory

Sodium Phytate

No Known Risks

Chelating agent used to improve formula stability. Used at low levels and not associated with pregnancy-specific concerns.

Sources: European cosmetics regulatory framework

Xanthan Gum

No Known Risks

Natural polysaccharide thickener used for stability and texture. Not associated with pregnancy-specific concerns.

Sources: European cosmetics regulatory framework

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)

Caprylhydroxamic Acid

No Known Risks

A chelating ingredient commonly used to support cosmetic preservation. Cosmetic safety reviewers concluded that caprylhydroxamic acid is safe in current cosmetic use; sensitisation and enhanced penetration are formulation considerations, especially on damaged skin, but no pregnancy-specific contraindication is identified for normal topical use.

Sources: CIR: Safety Assessment of Caprylhydroxamic Acid https://www.cir-safety.org/supplementaldoc/safety-assessment-caprylhydroxamic-acid-used-cosmetics

Formulations can change without notice. For the most accurate result, compare this list with your packaging and scan the exact ingredient label in MamaSkin when you repurchase.

How to use this assessment

The risk band is the primary conclusion. The score adds detail within that band and should not be used to compare products as if a one-point difference were clinically meaningful.

MamaSkin provides pregnancy-focused information, not medical advice. Your midwife, GP, pharmacist or dermatologist should take priority when your circumstances differ from typical cosmetic use.

Read the full methodology