The key to getting waves is to be consistent with brushing , you don't need any products or anything like that to actually get waves, I seen somewhere in somebodies quote that brushing is like the gym and products are like the supplements so how you gonna get big if you don't work out right. Products are there to help your waves lay down better if you have very unruly hair.
I went around and did alittle bit of research on the type of products most vets use and I have compiled a short list.

Those appear to be the most popular products.

Brushing:

When you are brushing make sure that you are brushing in every direction from your crown(middle of your head) out to your hairline . It is better to have a high quality 100% boar bristle brush (Diane, Annie is also top end quality), higher quality brushes may cost you more now but trust me it will pay off in the long run remember brushing is the gym so your brush is your weight the better the weight the better the progress.

Types of Brushes:

Now I will go over the types of brushes and what each brush is for.

Soft brush: For low haircuts and helps CONNECTIONS

Medium brush: For medium-low hair and early stage wolfing.

Hard brush: For super nappy-headed hoes(jus kidding) and for serious wolfing.

What is wolfing?

Wolfing is growing out your hair for longer periods than you normally do to get good depth and also to aid your connections. For example If you normally grow your hair out for 3-5 weeks before getting a cut then go for 6-8 (most black people)

*Note: if you are just starting in the wave game do not wolf until after you are on to your 3rd or 4th cut or you might do more harm to your waves than good.

Haircuts:

Once again if you are new and you are finally starting to see waves and you are about to get a cut DO NOT get anything lower than a #2 for your first cut with waves because you want to build depth and make sure that your waves are set in, after 3 or 4 cuts (or 3-4 months whichever comes first) then you can get a lower cut like a #1.5 . If your hair texture is naturally very nappy you can generally get low cuts and the waves will be crystal clear. If you have finer hair you probably might not want to go under a 1.5 or you possibly run the risk of "washout".

i just got my hair cut like two weeks ago and my hair is thin and curly i use carrot creme and the h2o method then put a durag on is dat gud and can u explain wolfing and will it b gud

Hey wuz up I need a lil advice. I followed the instructions and in about 6 weeks i had waves almost the 360. I went to the barber to get a No.1.5 and he basically cut all my dam hair off. He did go with the grain but he cut all my waves out. Now I am in my 2 weeks of continually brushing and following the steps but I only see like 5 or 6 waves in my head. I am currently in Iraq right now for the 3rd time and I decided if I make it back I am going to have waves. Are my waves gone for good now and wut do I have to do in order to get them back. I was in loved with my waves. Alot of people were commenting on them..now they are all gone. Could you help me out. Also i am using carrot creme and pink moisturizer..how do you know when you use it too much.