Scalp issues? Product build up? Stunting growth?

in Growing out
No matter what I do, I always have this white gunk on my scalp. Even after i clarify, shampoo, scrub, everything, i have something i thought was dandruff and product build up on my scalp. I'm afraid its stalling my growth.
i bought Shea Moisture Black Soap Dandruff scalp spray today in efforts to help, and i don't use a lot of even heavy products and i don't even use products on my scalp other than shampoo. I don't even put conditioner on my scalp. Help anybody?

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At first I thought I needed to clarify, but shampoo makes it so much worse, like my scalp is overcompensating.
Medium porosity, medium density, medium thickness
Current routine: Daily co-washing with Giovanni conditioner (whatever is on sale), styling with Catwalk Curls Rock Curl Amplifier, and 1-2x per week cleansing with a Chagrin Valley shampoo bar followed by an ACV rinse
Sent from my SPH-D710 using CurlTalk App
Medium porosity, medium density, medium thickness
Current routine: Daily co-washing with Giovanni conditioner (whatever is on sale), styling with Catwalk Curls Rock Curl Amplifier, and 1-2x per week cleansing with a Chagrin Valley shampoo bar followed by an ACV rinse
Sent from my SPH-D710 using CurlTalk App