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Formaldehyde-free resin is a solid hydrolyzed polyimide that contains no formaldehyde. In 1989, the world's first non-formaldehyde cosmetic products containing this type of polymer were introduced. At the time, this technology was still a research product and therefore did not come into wide use. Fast forward to 2021, and cosmetic companies all over the world are using it.

Phenol formaldehyde resins or phenolic resins are synthetic polymers derived from the reaction between phenol and formaldehyde. Phenolic resins were known as the first commercial resins used in the production of molded products such as billiard balls and laboratory countertops.

Phenol formaldehyde resins or phenolic resins are engineered polymers got from the response among phenol and formaldehyde. phenolic resins were known as the primary business saps utilized in the creation of formed items like billiard balls and lab ledges.