Hydroxypinacolone Retinoate HPR is a third-generation vitamin A derivative, an ester with retinoic acid as the substrate.
It is an ideal alternative to retinoic acid.
Advantages:
1. It has the excellent beauty effects of retinol, but is non-irritating and stable in nature.
2. HPR acts directly on the receptor protein to exert its effect.

Vitamin A Series Products Available: Vitamin A Derivatives and Retinoic Acid Derivatives
Retinaldehyde
Retinoic acid
Retinyl acetate
Retinyl propionate
Retinyl linoleate
Retinyl retinoate
Retinyl palmitate
Hydroxypinacolone retinoate
Retinyl trimethylsilane
Retinol/saccharomyces polypeptide
Methoxy PEG-12 retinamide
Tocopheryl retinoate

Is hydroxypinacolone retinoate better than retinol?

Feature	Hydroxypinacolone Retinoate (HPR)	Retinol
Potency	More potent, directly binds to retinoid receptors	Weaker, requires conversion to retinoic acid
Conversion Needed	No conversion needed (active form)	Must convert to retinoic acid in the skin
Irritation	Lower risk of irritation, more tolerable	Higher risk of irritation, redness, and peeling
Stability	More stable in formulations	Less stable, degrades faster
Effectiveness	Faster and more direct effects on wrinkles, pigmentation, and collagen production	Slower effects due to conversion process

HPR

Hydroxypinacolone Retinoate

Item	Specification	Results
Appearance	Yellow crystal	Conform
Odor &Taste	Characteristic	Conform
Assay	≥99%	99.83%
Total impurities	≤1.0%	0.17%
Single impurity	<0.5%	0.09%
Retonic acid residue	≤100ppm	Conform
Loss on Drying	≤0.5%	0.30%
Water content	≤0.1%	0.04%
Scorch residue	≤0.1%	0.06%
Heavy Metals	≤10 ppm	Conform
As	≤0.5 ppm	Conform
Cd	≤1.0 ppm	Conform
Pb	≤1.0 ppm	Conform
Hg	≤0.5 ppm	Conform
Pd	≤0.5 ppm	Conform
TotalPlate Count	≤1000 cfu/g	Conform
Total Yeast &Mold	≤100 cfu/g	Conform
E.Coli	Negative	Absent
Salmonella	Negative	Absent/25g
Staphylococcus	Negative	Absent/25g
Test Result: This product passes the test

Hydroxypinacolone Retinoate HPR

1. Good anti-aging performance. After using HPR (2%) for two weeks, fine lines and wrinkles were significantly reduced.
2. Excellent function of regulating the metabolism of the epidermis and stratum corneum.
3. Regulate sebum secretion.
4. Lighten pigments, whiten and remove spots.
5. Improve skin quality and beauty effects. Hydroxypinacolone Retinoate HPR can promote cell differentiation and renewal, and improve skin roughness.

Hydroxypinacolone Retinoate