The primary source of oils and fats found in perspiration is?

The primary source of oils and fats found in perspiration is sebaceous glands, which secrete sebum. Sebum is a lipid-rich substance that helps to moisturize and protect the skin. While perspiration itself is primarily composed of water and salts, the oils from sebum can mix with sweat on the skin's surface. This combination helps to maintain skin hydration and barrier function.