Notes

[alt text]

Advertisement showing colorful cosmetic bottles rising from foam beneath bold product text promoting an antimicrobial preservative for personal care products.

[transcription]

#The preferred preservative for cost effective antimicrobial protection.

Glydant is a highly cost effective preservative that protects cosmetics and toiletries from bacteria (both gram-positive and gram-negative), yeast and mold growth. Glydant’s slow release, long-lasting, low cost, effective antimicrobial activity has been demonstrated at low concentrations. Extensive tests prove Glydant has excellent stability over a wide pH range and temperature conditions.

Safe and easy to handle in laboratory evaluations and plant production, Glydant may be added at any stage of the formulation process.

Wherever prolonged antimicrobial action is needed, as in liquid soaps, shampoos and hair conditioners, formulators know they can rely on Glydant.

Samples and technical data may be obtained from your local Glyco technical representative. 

GLYCO INC.
Greenwich, Connecticut 06830

[additional notes] - Violet Webber

This ad shifts attention from the chemistry towards finished consumer products. Unlike many trade ads which emphasize the laboratory equipment of molecular symbolism, this ad introduces hair and skincare products submerged in pink and purple foam. The preservative is positioned as an invisible protector operating behind attractive consumer packaging.

The foam symbolizes cleanliness, freshness, and effectiveness while masking the underlying concern driving the advertisement: microbial contamination. The threat of bacteria, yeast, and mold is mentioned in the text, but visually softened through bright colors and hygienic imagery.

I was unable to find information regarding Glyco Inc. in my preliminary searches. Glydant, however, is a widely used, water-soluble preservative and antimicrobial agent, primarily containing DMDM Hydantoin. DMDM Hydantoin prevents mold, fungi, and bacteria growth by acting as a formaldehyde donor. It extends the shelf life of water-based products.

•  https://patents.google.com/patent/US4496576

• https://www.ulprospector.com/en/na/PersonalCare/Detail/761/31254/Glydant

• https://www.ewg.org/skindeep/ingredients/702196-DMDM_HYDANTOIN/