Which ingredient is known to be highly comedogenic?

Isopropyl palmitate is recognized as a highly comedogenic ingredient, meaning it has a tendency to clog pores and potentially lead to acne formation. This property arises from its composition, which allows it to create a barrier on the skin that can trap oil, dirt, and dead skin cells.

In contrast, glycerin is a humectant that attracts moisture to the skin and is generally well-tolerated with low comedogenic potential. Aloe Vera is known for its soothing properties and is commonly used in skin care products without being associated with pore-clogging. Salicylic acid is a beta-hydroxy acid that helps to exfoliate the skin and is often used in acne treatments due to its ability to penetrate pores and prevent blockages rather than contributing to them. Understanding the comedogenic ratings of ingredients is essential for individuals prone to acne, as it helps in selecting products that are less likely to aggravate their skin condition.