Which ingredient is primarily used for its anti-inflammatory properties?

Aloe vera is widely recognized in skincare for its anti-inflammatory properties, making it a popular choice in a variety of cosmetic and therapeutic formulations. It contains compounds such as acemannan and glycoproteins that can soothe irritated skin, reduce redness, and promote healing. This makes aloe vera particularly beneficial for conditions like sunburn, acne, and eczema, where inflammation is a significant concern.

In contrast, while salicylic acid is effective for acne due to its ability to exfoliate and unclog pores, it primarily functions as a keratolytic agent rather than specifically targeting inflammation. Retinol, known for its anti-aging benefits, works by promoting cell turnover and collagen production but can sometimes cause irritation rather than soothe inflammation. Vitamin C, although an excellent antioxidant that brightens the skin and addresses pigmentation, does not primarily serve as an anti-inflammatory agent.

Therefore, aloe vera's distinct and well-documented reputation for calming inflammation makes it the correct choice among the listed options.