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METHYLHEXYLACETALDEHYDE

Description

Methylhexylacetaldehyde, also known as MHA or 2-methylundecanal, is a synthetic fragrance ingredient commonly used in skincare and personal care products. This colorless to pale yellow liquid compound belongs to the aldehyde chemical family and possesses a fresh, floral-citrus scent with green and watery nuances.

In skincare formulations, methylhexylacetaldehyde serves primarily as a fragrance enhancer, contributing to the overall sensory experience of the product. Its molecular structure allows for slow evaporation, providing a lasting scent that complements other fragrance components. While not directly beneficial for skin health, it can improve user compliance and satisfaction with skincare routines.

Methylhexylacetaldehyde is generally considered safe for topical use when applied in concentrations typically found in cosmetic products. However, as with many fragrance ingredients, it may cause skin sensitization in some individuals, particularly those with sensitive skin or fragrance allergies. Formulators often use it in combination with other aromatic compounds to create complex, appealing scent profiles in various skincare products, including moisturizers, serums, and cleansers.