4-Methylbenzylidene camphor is primarily used as an organic UV filter in sunscreen and other personal care products. It absorbs UVB radiation, protecting the skin from sunburn and potential damage caused by prolonged sun exposure. Its inclusion in formulations helps to stabilize the product and enhance its effectiveness in shielding against harmful UV rays. Additionally, it is often combined with other UV filters to provide broad-spectrum protection, ensuring both UVA and UVB rays are blocked. Due to its lipophilic nature, it is commonly found in water-resistant sunscreens, making it suitable for use during swimming or other water-related activities. However, its use is regulated in some regions due to concerns about environmental impact and potential health effects.