You will need to always have an applicator, a wide-tooth comb (to spread the bleach/dye once your done with applying the mixture on your hair), hair ties or hair clips for sectioning, and a plastic mixing bowl.

Developer is the solution you need to mix with the bleach. In Cebu, there are a couple of places where you can buy the bleaching set, but if your hair is long or you need to bleach your hair more than twice, just buy the big bottle of developer and a whole bag of bleach. Although, I suggest not to buy the bleach and developer in bulk if you're still a newbie. You will have a hard time knowing how much you need, much less estimate the ratio of bleach to developer, so just go first with the ready-to-mix bleach and developer set.

I personally always shop at APM, the mall across SM Cebu. The shop is the third one on the left from the entrance. I go there too often for my  and my friends' needs so the attendants have come to recognize my face despite the different hair colors I sport everytime I go there. I also get my hair dye stash from my cousin from California.

Going back, let's see which developer you need:

For those with thin hair strands like me, and for those people who have had their hair dyed once or twice to a lighter shade, like maybe two to three tones lighter than your normal hair color, then you should use 9%/vol40 for your first try. It's not too harsh nor too mild, just enough to lighten your hair to an orangey blonde. If you are lucky, and/or if your hair permits, you can get a a yellowish shade of blonde. It all depends. If you have hick hair, regardless if you've had your hair dyed or not, use the 12%/vol60 developer. But if you're only going for a follow-up bleaching/dyeing, use 6%/vol20 developer because it is mild, and you can soak your hair for an x amount of time just like how you can when you first bleached/dyed it.

Finally: The Process

For example purposes, here is my friend, Angelique. I bleached and dyed her hair on the same day last March 29, 2016. Warning! Do not follow what I did. Even professionals don't do it (a lot). Again, she's my friend and I've bleached and colored her hair multiple times already, and I know how healthy her hair.

If you've noticed, she has an ombre. XD

Remember when I said that three of the most important parts of the bleaching process is (1) sectioning, (2) soaking, and (3) timing? Now, we are going to have an in-depth discussion about those three. This also applies when you're just dyeing your hair.

1. Sectioning !Very Important!

You have to do this every single step of the way. Yes. It is tiring, at the same time, if you don't want to look like a leopard then suck it up. LOL

In the Video: During the process of bleaching of her hair.

2. Soaking !Also Very Important!

You must make sure that each patch and strand of hair is soaked with mixture so you will get even color and not look like a leopard. Emphasizing on looking like a leopard because it will happen if you are not careful.

Let me just remind you that your scalp may or may not sting when your hair is in the soaking process. But it will get better eventually. Although, your scalp will be tender (like meat lol), so refrain from doing the bleaching/coloring process again right after. It will sting twice as bad. 

3. Timing !Another Important Matter!

You also have to make sure that you soak your hair for an ample amount of time. Too short means less than 15 minutes depending on the intensity of color you want to achieve. Too long means you go over 1 hour of soaking time. If you're using a 12%/vol60 developer, do not leave it on for more than 45 minutes. Expect something horrific to happen to your hair if you let the mixture sit too long. You also need to consider the time it took you to color your entire hair; make sure you do it quickly but thoroughly.

Depending on the intensity of the color that you want to show, you can start from the top part of your hair going down, or you can start from your nape going up. Depending also if you've bleached/colored your hair before, then I suggest starting from your nape going up so you can get a more even shade, because the top part of your hair has been exposed to heat and other elements, so the hair is more porous.