An "egg puff" in the context of beauty refers to the popular egg-shaped makeup sponge, designed for applying and blending liquid, cream, and sometimes powder makeup products. It's often referred to as a "beauty blender" (which is a brand name, but has become generic for this type of sponge). The "RPK" likely signifies a specific brand that produces these. While "RPK" isn't a globally dominant cosmetic brand, it appears to have a presence in the Pakistani market, offering various beauty products.

Key Features and Characteristics (of an RPK Puff Egg / Egg-shaped makeup sponge):

Shape: Egg-shaped (teardrop or similar). This unique shape is designed for versatile application:

The rounded base is used for blending larger areas of the face (forehead, cheeks, jawline).

The pointed tip is ideal for precise application and reaching smaller, harder-to-reach areas (around the eyes, nose, and mouth).

The flat side (if present on some designs) can be used for "baking" or pressing powder onto the skin.