Cyclohexane

Cyclohexane and pregnancy

Caution Advised

• Absorbed into the body
• Fetal development

Cyclohexane is a petroleum-derived volatile solvent used in some cosmetic formulations to dissolve other ingredients. It evaporates quickly from the skin, but during application, inhalation exposure can occur, particularly with aerosol or spray products. While specific human pregnancy studies are limited, animal studies show that high inhalation exposure to cyclohexane can affect fetal development. According to ECHA, cyclohexane is classified as a skin and respiratory irritant, and the volatile nature means it can be absorbed through inhalation. Pregnant women have increased susceptibility to organic solvents due to physiological changes in breathing and metabolism. While ACOG does not specifically address cyclohexane, general guidance recommends minimizing exposure to volatile organic compounds during pregnancy. The EU has restricted cyclohexane in aerosol cosmetics due to these concerns. Many obstetricians suggest pregnant women avoid products with strong solvent odors and opt for water-based alternatives when possible.

Cyclohexane and breastfeeding

Safe to Use

• Irritant

Cyclohexane is a volatile solvent that evaporates quickly from cosmetic products. When used topically, the primary exposure is through inhalation during application rather than dermal absorption. Due to its volatile nature and quick evaporation, cyclohexane is unlikely to be present on the skin long enough to enter the bloodstream in significant amounts. There is no evidence of this solvent accumulating in breast milk. The main concern would be inhalation exposure for both mother and infant if used in a poorly ventilated area. While there are no specific breastfeeding restrictions, it's advisable to use products containing volatile solvents in well-ventilated areas and avoid applying near the breast area. Water-based or less volatile alternatives are preferable for breastfeeding mothers.

Cyclohexane and postpartum

Safe to Use

• Irritant

Cyclohexane functions as a volatile solvent in cosmetics, helping to dissolve other ingredients and providing a light texture. It evaporates quickly from the skin after application. For non-breastfeeding postpartum use, the main concern is skin irritation, particularly if skin barrier function is compromised. Using in well-ventilated areas minimizes inhalation exposure. There are no specific postpartum health concerns beyond general irritation potential.

Cyclohexane and trying to conceive

Safe to Use

Cyclohexane is a volatile solvent with no known effects on fertility or reproductive hormones when used topically in cosmetics. The quick evaporation means minimal systemic exposure from typical cosmetic use. While high occupational exposure to organic solvents has been studied in relation to fertility, the low-level exposure from cosmetic products is not considered a concern for women trying to conceive. Using products in ventilated areas further minimizes any theoretical risk.

Cyclohexane and PCOS

Safe to Use

Cyclohexane is a petroleum-based solvent used in some cosmetics as a carrier ingredient. It has no known hormonal activity or effects on androgen levels, insulin sensitivity, or inflammation markers relevant to PCOS. There is no evidence that topical exposure to cyclohexane affects PCOS or its symptoms. The ingredient evaporates quickly and does not interfere with hormonal or metabolic processes. Women with PCOS can use products containing cyclohexane without specific concerns related to their condition, though individuals with sensitive skin may experience irritation regardless of PCOS status.

Cyclohexane and general use

Safe to Use

• Irritant
• Environmental pollutant

Cyclohexane is a volatile organic solvent derived from petroleum, commonly used in cosmetics to help dissolve other ingredients and provide a light, non-greasy texture. It evaporates quickly after application, which is why it's used in products like nail polish removers and some aerosol formulations. According to ECHA, cyclohexane is classified as a skin and respiratory irritant. Repeated or prolonged skin contact can cause dryness, redness, and irritation. Inhalation can cause dizziness, headaches, or nausea, though this is primarily a concern with concentrated exposure in poorly ventilated areas. The EPA identifies cyclohexane as a hazardous air pollutant, raising environmental concerns about its use. The EU restricts cyclohexane in cosmetics, particularly prohibiting its use in aerosol products. While small amounts in leave-on products are permitted, many cosmetic manufacturers are reformulating to use safer, less volatile alternatives. When products contain cyclohexane, using them in well-ventilated areas reduces inhalation exposure.

Everything else flagged for the same profiles

• Flagged in pregnancy

Related ingredients

Ingredients suggested in place of Cyclohexane, each one with its own page here.

• Glycerin

Ingredients that raise the same concerns.

• Octoxynol-10Environmental pollutant, Fetal development, Irritant
• Octoxynol-11Environmental pollutant, Fetal development, Irritant
• Octoxynol-40Environmental pollutant, Fetal development, Irritant
• PerfluorodecalinEnvironmental pollutant, Fetal development, Absorbed into the body
• TriclosanEnvironmental pollutant, Fetal development, Absorbed into the body
• Methyl Perfluorobutyl EtherEnvironmental pollutant, Fetal development, Absorbed into the body

Where this came from

Truva summarises published guidance from bodies including ACOG, the FDA, the EU SCCS and the Cosmetic Ingredient Review. It has no access to your medical history and it is not a substitute for your doctor, dermatologist or midwife. These assessments have not been reviewed by a clinician, and nothing here is a diagnosis or a prescription. If you are pregnant, breastfeeding or being treated for PCOS, take the ingredient list to the person looking after you.

Assessment last pulled from the ingredient database on 15 September 2026.