Functions and Features of Cosmetic-Grade Hexanediol (1,2-Hexanediol)

Cosmetic-grade Hexanediol (usually referring to 1,2-Hexanediol) is a very common ingredient in skincare and cosmetic products. It belongs to the diol category and is known as a “multi-functional helper” due to its wide range of benefits. Below are its key functional features:

1. Multi-Functional Humectant

• Attracts and retains moisture on the skin
• Provides gentle, non-sticky hydration
• Often used together with other moisturizing agents (e.g., glycerin, butylene glycol)

2. Effective Preservative Booster

1,2-Hexanediol has mild antimicrobial properties, which allow it to:

• Enhance the effectiveness of other preservatives
• Support “preservative-free” or “low-preservative” formulations
• Make formulas safer and milder

This is why it appears in many products marketed as “no added preservatives.”

3. Solvent / Solubilizing Agent

• Helps dissolve various water-soluble and oil-soluble active ingredients
• Improves ingredient dispersion
• Enhances formula clarity and stability

4. Sensory Enhancer

• Provides a smooth and soft skin feel
• Reduces stickiness and improves texture
• Enhances product spreadability

Common in serums, lotions, sprays, and sheet mask essences.

5. Mild and Low-Irritation

• Generally non-irritating and non-sensitizing
• Considered safe by EU, FDA, and Asian regulations
• Suitable for sensitive-skin formulations

(Though a very small number of individuals may still experience mild irritation.)

Typical Applications

• Serums & toners
• Sheet mask essences
• Lotions/creams
• Cleansers
• Sunscreens
• Makeup
• Baby skincare products

Typical usage level: 0.5–5%.

Summary

Cosmetic-grade Hexanediol (1,2-Hexanediol) provides:

✔ Moisturizing

✔ Preservative boosting

✔ Solubilizing

✔ Sensory improvement

✔ Mildness and safety

✔ Formula stability

This makes it a standard helper ingredient in modern skincare formulations.