Only if it's thinner because it's breaking off or falling out from chemical treatment.
I have super thick hair and I used to treat it like absolute crap as a child. It made zero difference. The only time I've ever had less hair is when I over processed it.
3C/Fine to Medium/Low Porosity/High Density
CJ Gentle Cleansing Shampoo
DB Pumpkin Seed Curl Moisturizing Conditioner
CJ Smoothing Lotion
Queen Helene Sculpturing Gel & Glaze
No Salts, No Waxes, No Butters, No Heavy Oils
No ACV, No Saponified Oils, Protein Sensitive