Some UV filter ingredients used in sunscreen can react with minerals in water (moisture) & sweat, and this creates yellow stains. The most "stainy" filters are avobenzone (https://whatsinmyjar.com/skincare-ingredients/butyl-methoxydibenzoylmethane) and https://whatsinmyjar.com/skincare-ingredients/benzophenone-3. If you get a yellow stain, it's best to soak the cloth in cold water, and wash with a detergent on cold settings. If it's an emergency, you can try putting a little bit of lemon juice on it, it might help.
These ingredients are not used in mineral-only sunscreens (like these ones: https://whatsinmyjar.com/search/sunscreens?filter_type=Mineral%20only&without_ingredient=Iron%20oxides), so these products are least likely to leave yellow stains. Just please keep in mind that these sunscreens can leave white stains on dark clothes similar to how a deodorant can.
Some UV filter ingredients used in sunscreen can react with minerals in water (moisture) & sweat, and this creates yellow stains. The most "stainy" filters are avobenzone (https://whatsinmyjar.com/skincare-ingredients/butyl-methoxydibenzoylmethane) and https://whatsinmyjar.com/skincare-ingredients/benzophenone-3. If you get a yellow stain, it's best to soak the cloth in cold water, and wash with a detergent on cold settings. If it's an emergency, you can try putting a little bit of lemon juice on it, it might help.
These ingredients are not used in mineral-only sunscreens (like these ones: https://whatsinmyjar.com/search/sunscreens?filter_type=Mineral%20only&without_ingredient=Iron%20oxides), so these products are least likely to leave yellow stains. Just please keep in mind that these sunscreens can leave white stains on dark clothes similar to how a deodorant can.