Disclosed is a cosmetic conditioning oil composition comprising of an oil or mixture of oils having surface tension in the range of 26 dyne/cm or lower and an oil thickener, wherein the composition has a viscosity about 5,000 cps or higher at 25 degrees Celsius. The composition of the present invention can provide improved conditioning benefits such as smoothness, softness, and ease of combing for hair when applied in shampoos, conditioner, treatments, and skin cleansing products as a silicone alternative.