Ingredient
Triethylamine
Triethylamine is flagged for pregnancy. The concern behind the strongest flag is absorbed into the body and irritant.
- TEA
- N,N-Diethylethanamine
Verdict by profile
Truva checks every ingredient against six profiles. Jump to any of them for the full assessment.
- Strongest verdict
- Caution Advised
- Its verdict for pregnancy, the profile this one is worst in
- Profiles flagged
- 1 of 6
- Counting avoid, high risk and medium risk
- Irritancy
- 4 of 5
- Higher means more likely to sting or redden
Triethylamine and pregnancy
Caution Advised
- Absorbed into the body
- Irritant
Triethylamine is an alkaline chemical used to adjust pH and stabilize emulsions in cosmetic products. It's a volatile compound that can be absorbed through the skin, though absorption rates depend on formulation and concentration. While specific studies on topical triethylamine use during pregnancy are limited, the compound's alkaline nature and potential for systemic absorption raise theoretical concerns. Pregnant skin can be more sensitive and reactive to irritants. The chemical structure allows for potential penetration through the skin barrier, though cosmetic concentrations are typically low. No direct evidence of teratogenicity exists, but the lack of comprehensive safety data during pregnancy prompts caution. The SCCS notes that triethylamine should be used at minimal effective concentrations in cosmetics. Most dermatologists recommend pregnant women avoid products with significant amounts of irritating alkaline compounds, particularly in the first trimester when fetal development is most vulnerable. Consider choosing products with gentler pH adjusters.
Triethylamine and breastfeeding
Safe to Use
- Irritant
Triethylamine functions as a pH adjuster in cosmetic formulations. When applied topically in cosmetics, absorption is generally minimal, particularly in rinse-off products. The compound is volatile and evaporates quickly from the skin surface. There is no evidence that topical triethylamine transfers into breast milk in significant amounts. The primary concern is local skin irritation rather than systemic effects. The compound's volatility means much of it evaporates before absorption can occur. While it can cause temporary irritation at the application site, this is typically a localized response. Dermatologists generally consider topical use acceptable during breastfeeding when used in standard cosmetic concentrations. The main recommendation is to avoid applying products containing triethylamine directly to the breast area or where the infant might come into contact with the product. If irritation occurs, discontinue use.
Triethylamine and postpartum
Safe to Use
- Irritant
Triethylamine serves as a pH adjuster and emulsion stabilizer in skincare products. For postpartum women not breastfeeding, the main consideration is skin sensitivity, which can be heightened after childbirth due to hormonal changes. Postpartum skin may be more reactive to alkaline compounds like triethylamine. If you experience irritation, redness, or discomfort, discontinue use and choose products with gentler pH adjusters. In standard cosmetic concentrations in well-formulated products, most women tolerate it without issues.
Triethylamine and trying to conceive
Safe to Use
Triethylamine is a pH-adjusting compound used in cosmetic formulations. There is no evidence that topical use affects fertility or reproductive function in women trying to conceive. The compound has no known hormonal effects and does not interfere with ovulation, conception, or implantation. Topical absorption is minimal in standard cosmetic use. The primary consideration is skin irritation, which is a local effect rather than a systemic concern. Most fertility specialists do not recommend avoiding triethylamine-containing cosmetics when trying to conceive.
Triethylamine and PCOS
Safe to Use
Triethylamine is a pH-adjusting ingredient used to stabilize cosmetic formulations. It has no hormonal activity and does not interact with androgen or estrogen pathways relevant to PCOS. There are no known concerns regarding triethylamine use for women with PCOS. The ingredient does not affect hormone levels, insulin sensitivity, or other metabolic factors associated with PCOS. The only consideration is general skin sensitivity, which some women with PCOS may experience. For PCOS-related skin concerns like acne or excess oil production, triethylamine itself provides no therapeutic benefit—it simply helps maintain product stability and pH. Focus on the active ingredients in your skincare products rather than pH adjusters when addressing PCOS symptoms.
Triethylamine and general use
Safe to Use
- Irritant
Triethylamine is an alkaline compound used to adjust pH and stabilize emulsions in cosmetic products. It helps maintain product consistency and effectiveness by balancing acidity levels. The primary concern with triethylamine is its potential to cause skin and respiratory irritation, particularly at higher concentrations or in leave-on products. The CIR has reviewed triethylamine and concluded it's safe in cosmetics when formulated to minimize irritation. Sensitive individuals may experience redness, itching, or discomfort. The compound has a distinctive ammonia-like odor that some find unpleasant. The EU regulates triethylamine concentration in cosmetics and requires proper formulation to minimize irritation risk. In well-formulated products at appropriate concentrations, most people tolerate it without issues. If you have sensitive skin or notice irritation, choose products with alternative pH adjusters.
Everything else flagged for the same profiles
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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 .
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