You don’t want kids making jokes about your morning flea dip. There are plenty of articles already written about layering fragrances—go read a few—so there’s no need to wear too much perfume or cologne. One trick is to spray your clothes and inside of your shoes before going to bed, so the scent isn’t as strong the next day. Your goal is to wear enough fragrance that a person about three feet away can tell you’re wearing it, but not the whole room.
Deodorant masks odor, while antiperspirant lessens the amount of sweat. There are many combination products. Make sure you know what you’re getting at the store.
If you’re allergic to standard ingredients, the health food store probably has something that will work for you. If you’re still allergic to those, or if your parents refuse to buy you deodorant/antiperspirant because they’re in denial that you’ve hit puberty, some people have success with first applying lemon juice to their armpits, then dusting on a combination of baking soda and corn starch. You probably will need to reapply the powder mixture throughout the day, especially if it’s hot outside.
After that, spray fragrance inside of your clothing, wherever you sweat (e.g. arm holes and waistband). If you’re too allergic to use even mild fragrances, your local health food store should carry citrus sprays, rose water, and similar. Natural oils diluted by carrier oils might be gentle enough for your skin. Make sure you only use blends that don’t stain clothes. You can use an old sock to test this, because one toe stain is a lot better than accidentally creating two yellow armpit oil stains on your shirt.
Any kind of deodorant or antiperspirant, natural or standard, needs to be applied right after stepping out of the shower or bath in order to limit odor production. Touch it up before you leave the house. If you shower, sleep, wake up and then apply deodorant, it’s already too late because the BO bacteria have multiplied like ants at a picnic.
You need to shower every day… or maybe every other day. If you can’t bathe, at least wash your face, plus any areas that sweat, with a washcloth and cleanser. Don’t forget to clean your ears: Seriously, if you have ear potatoes, kids will laugh. Here’s another great guideline: If you sweat, go shower.
If you sweat, change your clothes—especially socks and underwear—because you’re wearing a buffet for bacteria. At least twice per week, spray the insides of your shoes with stuff designed to remove BO, then lightly sprinkle baking soda inside of your shoes. This is especially important for sneakers. Some insoles have odor-absorbing properties and make shoes more comfortable. Sporting goods and shoe stores usually carry anti-odor things that look like ping pong balls crossed with Swiss cheese, and speaking of cheese... these things are designed to absorb stinky gym shoe odors.