What Is Pentaerythrityl Cyclohexane Dicarboxylate?
Pentaerythrityl Cyclohexane Dicarboxylate is a synthetic ester created by reacting 1,2-cyclohexanedicarboxylic acid with pentaerythritol, a four-carbon alcohol that has four hydroxyl groups. Both starting materials come from petroleum-derived feedstocks, giving the final ingredient a stable non-volatile structure prized in cosmetics. It first appeared in personal care formulations in the early 2000s as brands searched for modern film formers that could replace older plasticizers yet still deliver long-lasting wear. The manufacturing process involves controlled esterification followed by purification to remove unreacted residues, yielding a clear viscous liquid or soft solid that blends easily with oils and silicones.
You will most often see Pentaerythrityl Cyclohexane Dicarboxylate in color cosmetics such as foundation, mascara, eyeliner, lipstick and pressed powders where it helps pigments stay put. Skin care products that promise long wear or water resistance, including sunscreens, anti-aging creams and facial primers, also rely on it. Its ability to create a flexible continuous film makes it useful in hair styling creams and leave-in treatments too.
Pentaerythrityl Cyclohexane Dicarboxylate’s Cosmetic Benefits/Uses
In topical products this ingredient has one primary job.
Film forming: It lays down an invisible flexible layer that anchors pigments, actives and moisturizers to the skin or hair. This film helps makeup resist smudging and fading, boosts water and sweat resistance in sunscreens, reduces transepidermal water loss for a smoother feel and adds a soft touch finish without tackiness.
Who Can Use Pentaerythrityl Cyclohexane Dicarboxylate
This film former is considered suitable for most skin types including dry, normal, combination and oily skin because it is lightweight and non-greasy. Sensitive skin generally tolerates it well since it is non-reactive and odorless, although highly reactive or compromised skin should always observe how it feels when layered under multiple actives.
The raw material is synthesized entirely from petroleum sources so it contains no animal derivatives, making it appropriate for vegans and vegetarians.
No data suggest it poses a special risk for pregnant or breastfeeding women when used in rinse-off or leave-on cosmetics. Still, this is not medical advice and anyone who is expecting or nursing should show their doctor the full ingredient list of any product before using it to be extra safe.
Pentaerythrityl Cyclohexane Dicarboxylate is not known to increase photosensitivity, meaning it will not make skin more prone to sunburn. It can actually help stabilize sunscreen films by holding UV filters in place, though daily broad-spectrum sun protection is still essential.
Potential Side Effects/Adverse Reactions
Responses to topical Pentaerythrityl Cyclohexane Dicarboxylate differ from person to person. The following points cover potential side effects, yet most people will not notice any problems when using a well-formulated product.
- Mild skin irritation — very uncommon, usually presents as transient redness or itching
- Contact dermatitis — rare allergic reaction that can include rash or swelling
- Eye irritation — possible if the ingredient migrates into the eye area from products like mascara or eyeliner
- Temporary clogged pores — theoretically possible in people extremely prone to acne when layered with heavy occlusives
If you experience any discomfort, discontinue use and consult a healthcare professional for guidance.
Comedogenic Rating
Rating: 1 / 5
Pentaerythrityl Cyclohexane Dicarboxylate has a very low tendency to clog pores because it is a large, branched ester that sits on the surface rather than sinking deeply into follicles. It creates a breathable film that feels light and non-greasy, so it is unlikely to trap excess sebum or dead skin cells the way heavier oils can.
Suitable for acne-prone or breakout-prone skin in most cases.
Its final impact on pore clogging depends on the full formula. Pairing it with heavy waxes or butters can raise the overall comedogenicity of a product even if this single ingredient rates low.
Summary
Pentaerythrityl Cyclohexane Dicarboxylate is mainly used as a film former. By linking together a cyclohexane dicarboxylic acid and a pentaerythritol backbone it produces a flexible mesh that anchors pigments, active ingredients and moisturizers to skin or hair. This film boosts long-wear performance, helps makeup resist smudging, improves water resistance in sunscreens and leaves a smooth non-tacky finish.
While it is not as famous as silicone stalwarts like dimethicone it has carved out a steady niche in modern long-wear foundations, mascaras and water-resistant skincare where formulators value its balance of grip and lightweight feel.
Current safety data show a very low risk of irritation or sensitization making it generally safe for everyday cosmetic use. As with any new product it is wise to perform a quick patch test to be sure your own skin agrees with the complete formula.