Description
Sodium Hydroxymethylglycinate is the sodium salt of a substituted amino acid, according to the official chemical description. In the regulatory nomenclature it is also identified as Sodium N-(Hydroxymethyl)glycinate. The entry attributes to it the technical functions of hair conditioning agent and preservative. Preservatives are ingredients incorporated into cosmetic formulations to inhibit the growth of microorganisms in the product during its shelf life and after opening. Hair conditioning agents are ingredients added to products intended for the hair in order to modify its surface properties, handling or combability.
Under Regulation (EC) No 1223/2009, this ingredient is listed in Annex V, reference 51, the positive list of preservatives permitted in cosmetic products. The maximum authorized concentration in the finished product is "0.5%". The entry includes the following literal condition: "Not to be used if the maximum theoretical concentration of releasable formaldehyde, irrespective of the source, if the mixture as placed on the market is ≥ 0,1 % w/w".
The information presented is for technical reference only and does not constitute a recommendation for use or an efficacy claim.