Although you might feel like you know everything you need to know after watching two or three YouTube videos, chances are, it isn't enough. And not bothering to do extensive research might just lead to your worst nightmare: Bleaching mistakes can lead to brittle hair and burns or unflatteringly orange-y hair. Suffice it to say, there are lots of things you should know and check multiple times.

First, are you sure your hair is suitable for bleaching? If you have previously processed your hair, you might want to skip bleaching this summer, since it's best to bleach virgin hair (whether you're alone or in a salon) for lesser damage.

Knowing the right bleach developer to use is also vital. The higher the volume, the lighter you can go in one sitting, but also, the harsher and more dangerous it is for your hair — trust us, you don't want to just guess on this one.

Another issue is managing your expectations. For girls with jet black hair, going light blonde after 30 minutes of bleaching is an impossible wish. You'll have to be realistic with the outcome to avoid double processing (we'll get to this later).

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Even if you're going to a salon, preparing your hair before bleaching is an important step. Having your hair in its best condition helps the bleach perform better and prevents hair damage. The harsh chemicals used in bleaching dry and heat up your hair so you've got to make sure that your hair and scalp is moisturized. Reduce your use of hot tools for at least a month before bleaching to help keep your hair in tip-top condition.

Another important thing to remember? Don't wash your hair at least 24 hours before bleaching: You see, it's actually better if your hair is oily. Along those lines, it's also often recommended to treat your hair with coconut oil before bleaching. It will help the process and create a protective barrier for your hair and scalp against the damage.

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In addition to the bleach and developer, you also need to gather the correct tools: You'll need a mixing bowl, dye brush, section clips, and gloves.

One important note: You must NOT use any metallic tools, since they will be burned by the bleach mixture. Instead, opt for all plastic home hair bleaching kit to have a smoother experience. Also, be sure to wear an over-sized shirt that you don't care for (because no one likes bleach stains).

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Most people don't have allergies to bleach alone (though some are certainly more sensitive to it than others), but if you're using a bleach with color in it, patch testing is always important. A day before you apply it, make a small portion of the bleach mixture and do a patch test on the inside of your elbow or at the back of your ear. Wait for it to dry up and watch out for allergic reactions. As mentioned earlier, it's natural for the bleach to heat up. But if it stings too much and starts to burn, abandon the plan immediately and rinse with water.

When you do the patch test, go for a strand test as well. This way, you'll have a realistic idea of how the bleaching process will go.

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Are you a strong independent woman? Sure, you are. But you'll still need a helping hand when you bleach your hair: So call your BFF, sister, mom, boyfriend — anyone you trust to help you apply. Because even if you surround yourself with mirrors, it will be difficult for you to apply the bleach all over your hair — you'll get much better results with some extra help.

Oh and be sure to share your research and bleaching knowledge to the person who'll help you so he/she will know what to do (and what not to do).

Image via David Pereiras/EyeEm/Getty