Hydroxypinacolone Retinoate
Other name: HPR, retinoic acid ester,retinoic acid pinacol ester
Molecular weight: 398.58
Molecular formula: C26H3803
CAS No.: 893412-73-2
Appearance: yellow powder, light yellow to yellow liquid
Purity: 99%
Melting point: 95.0~98.0℃
Solubility: oil soluble
What is hydroxypinacolone retinoate?
Hydroxypinacolone retinoate (HPR) is a retinoic acid ester ingredient, belonging to the retinoid family. It is highly stable and a derivative of vitamin A, which can bring multiple benefits to the skin.
It is more well-known under the trade name Granactive Retinoid Pro +, which is composed of 10% HPR and 90% solvent dimethyl isosorbide.
HPR works by binding to the retinoic acid receptors on the surface of the skin. When used topically, it is gentler than retinoic acid (tretinoin), and is suitable for sensitive skin to replace pure retinol.
is hydroxypinacolone retinoate Safe?
Hydroxypinacolone retinate (HPR) is generally considered safe for most skin types when used as directed.
Key Factors
* Milder than other retinoids
HPR is a retinoid (vitamin A derivative) that works by binding to retinoic acid receptors in the skin. Unlike stronger retinoids (such as prescription drugs), HPR is less irritating and more stable, making it a good choice for sensitive skin and those who are new to retinoids.
Clinical studies have shown that HPR has fewer side effects (such as redness, dryness, and peeling) than retinoic acid, but some people may experience mild irritation, especially with overuse.
* Formulation and concentration
HPR often has a solvent added (such as dimethyl isosorbide in products like Granactive Retinoid Pro+) to enhance penetration. Low concentrations (such as 1-2%) are generally well tolerated, but higher concentrations should be used with caution, especially on sensitive skin.
Always follow the product instructions and perform a patch test before using any new formula.
*Interactions with other ingredients
Do not use HPR with harsh ingredients such as benzoyl peroxide, high concentrations of AHA/BHA, or products containing alcohol. This may exacerbate skin dryness and irritation.
*Who should use HPR?
Sensitive or allergic skin: For those prone to skin irritation, HPR is a gentler alternative to retinol and tretinoin.
For those seeking anti-aging care: HPR helps collagen production, improves skin texture, and reduces fine lines without causing severe peeling.
For acne-prone skin: HPR may help unclog pores and regulate cell turnover, but is gentler on severe acne than prescription retinoids.
hydroxypinacolone retinoate Effects
hydroxypinacolone retinoate for skin
*Improve fine lines and wrinkles
*Anti-oxidation
*Lighten epidermal pigments and reduce skin roughness
*Reduce age spots and reduce skin peeling
*Treat acne and control oil to inhibit sebum secretion
*Promote collagen production
*Higher stability and less irritation than retinol

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