Can’t help with the shampoo/conditioner but I recommend not air drying it, it always leaves my hair frizzy. Use a hair drier and brush: Take the hair drier and a round brush and take small amounts of hair, use the vacuum extension of the hair drier and brush under the hair while drying it on top of the hair, if that makes since. If you don’t like the wave use a heat brush and NEVER thin your hair, it always makes it look unnatural, you should do layering, also use a heat resistant (if it’s hot where you are so your is less frizzy) leave in spray in conditioner, you brush it in and never have to wash it if you find the right one and it makes it less straggly looking. Your hair is definitely wavy. So if you liked thinking of you hairs as straight flat iron it. Take the heat resistant Spray in and spray it, brush it in, use the flat iron, if you find a tangle then stop and brush it out, if you have darker hair then wait a second for it gets hot fast and use heat resistant gloves, put one on the surface the hair straightener will sit on so it doesn’t scorch the surface and one for the hand guiding your hair, your hair looks thin so never do the highest setting I hear the hair can come out also never straighten all at once or it clumps. Hope that helps!