If you don’t know your retinol from your retinoids, and kale and quinoa are strictly for eating only, it’s probably time to brush up on your antiaging repertoire. Your 20s are the best time to prevent—and fight!—wrinkles, pigmentation, sagging skin, and more unfortunate signs that you’re growing up (and older).

So in the slideshow ahead, we’ve created a full A-to-Z guide of the antiaging options available to you right now. There are thrifty, natural ways to hydrate your skin, intense treatments that your dermatologist will have to prescribe or perform, and more ways to halt Mother Nature—at least for a little while.

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J is for Jojoba Oil

If you're looking for all-natural hydration that won't cause a breakout, this is it. "Jojoba oil is exceptionally effective because it has a molecular similarity to the building block oils of the skin," explains a spokesperson at beauty brand Ogee.

When applied, it moisturizes and strengthens the top layer of the skin, helping to prevent the formation of fine lines, which will eventually prevent deeper wrinkles. It also absorbs better than a lot of other oils, so it won't leave you with an uncomfortable greasy residue.