Wearing makeup in extremely hot weather can be challenging, especially when dealing with acne-prone skin. From my personal experience, finding products that offer both longevity and skin-friendliness is essential to prevent breakouts and maintain a fresh look throughout the day. First, I recommend starting with a lightweight, oil-free primer that controls shine and creates a smooth base. For coverage, I prefer mineral-based foundations or tinted moisturizers formulated specifically for acne-prone skin, as they tend to be non-comedogenic and breathable. Applying in thin layers and using a damp makeup sponge can help achieve even coverage without clogging pores. Setting the makeup with a mattifying setting spray or translucent powder ensures that it lasts through heat and sweat. Throughout the day, blotting papers are a lifesaver to remove excess oil without disturbing makeup. I’ve found that some brands labeled as "acne-friendly" truly perform well under these conditions, lasting up to 11 hours without causing irritation or worsening acne. Remember to always remove makeup thoroughly at the end of the day with gentle cleansers to keep your skin healthy. In summary, your makeup routine in 100+ degree weather should prioritize lightweight, breathable products designed for acne-prone skin, combined with proper application and touch-up techniques to maintain a flawless look all day.