This may not seem quite like a home remedy, but rather advice on how to perform proper hygiene. When you are outdoors, there are numerous allergens that attack you and your nasal passages. Unless you find a different alternative to ridding the body of these allergens, the best way to clear your skin of allergens is to bath. Similarly, if you did not bathe immediately, it may be wise to wipe and clean away any allergens that may be on your couch, sheets, carpeting, and clothing as well. Consider doing a thorough cleaning weekly for best results to help keep your house free from allergens in the air.