Mizani Butter Blend Relaxer

Silent Spring Institute confirmed parabens in this product's formulation. The paraben family is classified by the EU SCCS as suspected endocrine disruptors with weak estrogen-mimicking activity; they have been detected in human breast tissue in biomonitoring studies.

Silent Spring Institute confirmed phthalates in this product's formulation. Phthalates are endocrine disruptors linked to reproductive and developmental toxicity, and are typically used as fragrance fixatives or plasticizers.

Calcium hydroxide is the primary relaxing agent. When activated, it permanently breaks hair disulfide bonds at high pH. The chemistry frequently causes scalp burns, lesions, and chemical injury. Epidemiological research (Boston University Black Women's Health Study, NIEHS Sister Study) has linked frequent chemical relaxer use to elevated risks of uterine and breast cancer.

Petroleum-derived occlusives that form the carrier base. Cosmetic-grade versions are generally low-risk on skin but provide no nutritional benefit and may contain trace polycyclic aromatic hydrocarbons depending on refining grade.

PEG-75 Lanolin is an emulsifier and conditioning agent. Lanolin can be a contact allergen for some people, and PEG ingredients can be contaminated with 1,4-dioxane (a probable carcinogen) depending on manufacturing controls.

Shea butter is a beneficial natural emollient that softens the relaxer base. It cannot offset the documented endocrine disruptors or caustic relaxing chemistry but provides a measure of conditioning during the harsh process.

Cocoa butter is a beneficial natural emollient that adds moisturizing fats to the formula. As with shea butter, it provides conditioning but does not offset the relaxer's endocrine disruptor and caustic-chemistry concerns.