Is it sea kelp or sea kelp bioferment? As I understand it they are not the same ingredient.
You should not need to dilute vinegar by only 50%, that could be quite drying. If the pH of your products are in the right acidic range you should not get massive benefit from regular vinegar rinses - a small dilution will 'soften' the water, occasional treatments with more concentrated solution can help remove some hard water deposits, regular use is really for encouraging the cuticle to lay flat as hair dries which your products should be doing.
The Scoop on Vinegar
THE NATURAL HAVEN: Apple Cider Vinegar : Good or Not?
‚™°‚™°‚™°Structure of Hair Part 2 - pH Balance Basics - YouTube
(one of a series)
The Science of Black Hair on pH Problems & pH Balancing (Moisture Basics 3/4) - YouTube
2a-2c, medium texture, porous/ colour treated. Three years CG, growing out mechanical and chemical damage = breakage and very high porosity. Past armpit length heading for waist.
CO-wash: Inecto coconut
Treatments: Komaza Matani, coconut oil, Hairveda Sitrinillah
Leave in: Fructis Sleek & Shine (old), Gliss ultimate volume, Inecto argan
Styler: Umberto Giannini jelly, Boots Essentials gel
Experimenting with: going back to basics