How often do you use the vinegar? Usually a low pH is used to seal the cuticle, and your signature says you have low porosity hair - which the cuticle would already be sealed. What purpose are you using the vinegar for? If it's for clarifying, it's not a clarifier at all. I use vinegar for cleaning and it wouldn't clean the hair product off my mirror. It wasn't an experiment, it was a chance finding. Don't trust it to remove buildup.

Are you using any conditioner after your cowash? Stylers? Try cupping some water into your hands and refreshing your hair that way. Spray bottles have a tendencies to increase frizz on some people.
2c-3a - med-coarse - normal-high porosity - high density

NP/LP: CJ Daily Fix, KMF Whenever / Giovanni TTTT
RO/LI: Sevi Pumpkin Seed, CJ Argan & Olive Oil, YTBbs
DC/PROTEIN: KC Stellar Strands / CNPF
STYLER: Ouidad Climate Control, SS Firm Hold Gel
COLOR: henna, amla & indigo
: glycerin in high/low dews, polyquats, parabens