In French, the word for hair is cheveu, which is a masculine noun. Therefore, when referring to hair, you would use male articles and descriptors. For example, you would say ‘le cheveu’ (the hair) instead of ‘la cheveu.’
However, it’s important to note that while the word itself is masculine, hair can be associated with both masculine and feminine attributes depending on the context and style. In discussions about hairstyles or grooming, you might encounter phrases that reflect both genders. Overall, linguistically speaking, hair is classified as masculine in the French language.