The present invention provides a polyesteramine, a composition having a polyesteramine according to the present invention as an active ingredient and methods for improving hair detangling, wet and dry combing, shine, gloss, conditioning, surface smoothening, water resistance, film-forming properties, static charge reduction and any combination thereof in various personal care products, such as, hair care, skin care, nail care and cosmetic products. Preferably, the polyesteramine is incorporated into a shampoo, hair conditioner, styling mousse, hair treatment preparation, hair coloring product, semi-perm product, oxidation dye, body wash, liquid soap, skin care preparation, lipstick, mascara, color cosmetic, nail care preparation or any combination thereof.