Sodium Hydroxymethylglycinate
Sodium N-(hydroxymethyl)glycinate
Formaldehyde-releasing preservative; releases formaldehyde slowly in aqueous solutions; risk of sensitization particularly in individuals already sensitized to formaldehyde; EU requires disclosure labeling when free formaldehyde exceeds 0.05%; avoid in products for children and formaldehyde-sensitive individuals.
Function & Common Use
Preservative, Antimicrobial
Preservatives
Shampoos, conditioners, body washes, facial cleansers, baby wipes (with caution)
Synthetic
Concentration Limits
0.5%
0.5%
0.5%
0.5%
Format restriction: EU: must not be used in aerosol products; formaldehyde-releasing preservative - label warning required if free formaldehyde exceeds 0.05%
Baby restriction: Yes
Pregnancy: No
IFRA: No
Frequently Asked Questions
Is Sodium Hydroxymethylglycinate safe to use in skincare?
Sodium Hydroxymethylglycinate has a Medium concern rating. Formaldehyde-releasing preservative; releases formaldehyde slowly in aqueous solutions; risk of sensitization particularly in individuals already sensitized to formaldehyde; EU requires disclosure labeling when free formaldehyde exceeds 0.05%; avoid in products for children and formaldehyde-sensitive individuals.
Is Sodium Hydroxymethylglycinate allowed in India?
Sodium Hydroxymethylglycinate is currently classified as "Permitted" under Indian cosmetics regulations. The maximum permitted concentration is 0.5%.
What is Sodium Hydroxymethylglycinate used for in cosmetics?
Sodium Hydroxymethylglycinate functions as: Preservative, Antimicrobial. It is commonly found in: Shampoos, conditioners, body washes, facial cleansers, baby wipes (with caution).
Can Sodium Hydroxymethylglycinate cause an allergic reaction?
Yes. Sodium Hydroxymethylglycinate has an allergen flag (Yes). If you have sensitive skin or known fragrance/contact allergies, patch-test products containing this ingredient before full use.
Is Sodium Hydroxymethylglycinate safe for babies?
Sodium Hydroxymethylglycinate has baby/child restrictions: Yes. Avoid using products containing this ingredient on infants unless specifically formulated and labelled for baby use.
Regulatory Status
EU Annex: Annex V (permitted preservative)
Identifiers
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