Terpinen-4-ol is widely used in the cosmetic and personal care industry due to its antimicrobial and anti-inflammatory properties. It is a key active ingredient in many antiseptic lotions, acne treatments, and skin cleansers, especially in natural and organic skincare products. Its ability to penetrate the skin and combat bacteria makes it effective against acne-causing microorganisms.

It is also a major component of tea tree oil, contributing to its use in treating minor cuts, burns, and insect bites. In aromatherapy, terpinen-4-ol is valued for its soothing scent and potential to support respiratory health when inhaled, often used in vaporizers or chest rubs to relieve congestion.

In household products, it serves as a natural disinfectant in cleaning solutions, offering antimicrobial action without harsh chemicals. Additionally, it has shown promise in studies for its antifungal activity, particularly against nail and skin fungi, making it useful in over-the-counter antifungal creams and nail treatments.

Due to its pleasant, mild odor, it is sometimes used as a fragrance additive in soaps, perfumes, and air fresheners.