What Is Polyglyceryl-6 Tetraricinoleate/Hydroxystearate?
Polyglyceryl-6 Tetraricinoleate/Hydroxystearate is a plant-derived ingredient created by linking six glycerin units with fatty acids that come from castor oil and hydrogenated castor oil. The result is a mild, oil-like material that can mix with both water and oil.
Interest in greener, skin-friendly emulsifiers grew in the early 2000s. Labs began exploring polyglycerin and castor oil blends because both sources are renewable and gentle on skin. This particular ester quickly gained favor as brands looked for alternatives to traditional PEG surfactants.
The production process starts with vegetable glycerin that is heated to form polyglycerin-6. Ricinoleic acid from castor oil and hydroxystearic acid from hydrogenated castor oil are then reacted with the polyglycerin under controlled temperature and pressure. No solvents are needed and the final material is biodegradable.
You will spot Polyglyceryl-6 Tetraricinoleate/Hydroxystearate in cleansing balms, oil-to-milk cleansers, facial masks, gentle micellar waters, lightweight moisturizers and some baby care items. Its ability to keep oil and water mixed while staying mild makes it a go-to for formulas aimed at sensitive or environmentally conscious users.
Polyglyceryl-6 Tetraricinoleate/Hydroxystearate’s Cosmetic Benefits/Uses
This multitasker supports both the feel and performance of many modern skin care products.
- Cleansing: Helps lift away makeup, sunscreen and daily grime without stripping skin’s natural oils so the end result feels soft not tight
- Emulsifying: Binds oil and water into a stable blend which prevents separation, improves texture, allows for lighter formulas and helps deliver active ingredients evenly across the skin
Who Can Use Polyglyceryl-6 Tetraricinoleate/Hydroxystearate
This gentle emulsifier works well for nearly all skin types including dry, oily, combination and sensitive because it cleanses without stripping and has a very low irritation profile. Extremely acne prone skin can still use it comfortably as it is lightweight and tends not to clog pores.
It is suitable for vegans and vegetarians since the glycerin and fatty acids are sourced from plants rather than animal derived materials.
No specific warnings exist for pregnant or breastfeeding women. The molecule is large, sits mainly on the surface and has no known hormonal activity, yet this is not medical advice so anyone who is expecting or nursing should check with a healthcare professional before adding new products.
The ingredient does not cause photosensitivity so it will not make skin more prone to sunburn. It also plays nicely with most other cosmetic ingredients, allowing formulators to pair it with acids, retinoids or antioxidants without stability issues.
Potential Side Effects/Adverse Reactions
Individual responses to topical Polyglyceryl-6 Tetraricinoleate/Hydroxystearate can vary. The points below list potential side effects that could occur even though most people will not experience them when the ingredient is used correctly in a finished product.
- Mild redness or stinging
- Transient itching on very sensitive skin
- Rare allergic contact dermatitis in individuals already allergic to castor oil derivatives
- Temporary eye irritation if the product is rinsed off poorly and residual film reaches the eyes
- Occasional clogged pores in users extremely prone to congestion
If any persistent irritation or discomfort occurs discontinue use and consult a qualified healthcare provider.
Comedogenic Rating
Rating: 1/5
Polyglyceryl-6 Tetraricinoleate/Hydroxystearate has a very low tendency to block pores because its bulky, branched structure sits on the skin surface and rinses away easily. Although it contains castor-derived fatty acids, the final ester is lighter and less occlusive than pure oils, which keeps the risk of congestion minimal.
Suitability for acne-prone skin: generally safe and well tolerated for those who experience breakouts.
Keep in mind that overall formula design, concentration and the presence of heavier oils will influence the pore-clogging potential of the finished product.
Summary
Polyglyceryl-6 Tetraricinoleate/Hydroxystearate acts mainly as a cleanser and emulsifier. Its multi-glycerin backbone loves water while its castor-derived tails love oil, allowing it to grab grime and makeup then rinse off clean. The same dual nature stabilizes oil-in-water mixtures so lotions and balms stay smooth and spreadable.
The ingredient enjoys steady popularity in eco-focused and sensitive-skin formulas but has not reached the household-name status of classic surfactants because it is costlier and harder to source in bulk.
Safety studies and real-world use show a very low irritation or sensitization rate, making it suitable for most users. As with any new skincare ingredient it is wise to patch test a small area first to make sure your skin agrees with it.