Adding CTAC to Shampoo with Zinc PCA

Adding Cetrimonium Chloride (CTAC) to your shampoo formulation containing Zinc PCA should not cause hair loss. CTAC is primarily used as a conditioning agent to reduce static electricity and help hair feel soft, smooth, and easy to style, which helps prevent tangling.

Regarding your boyfriend's experience with GuarCat making his oily hair feel greasy, this can happen with cationic conditioning agents like GuarCat and CTAC if used at too high a concentration. These ingredients coat the hair strands, and on oily hair, too much coating can lead to a heavy or greasy feeling.

Zinc PCA is a beneficial ingredient for oily scalp and related hair loss, as it helps reduce oiliness and can contribute to reducing hair loss caused by an oily scalp.

To avoid the greasy feeling when using CTAC in a shampoo for oily hair, consider using it at a lower concentration. The recommended usage rate for CTAC (30% active content) in shampoo is typically 0.5-2.0%. For oily hair, starting at the lower end of this range (e.g., 0.5-1.0%) might be more suitable to provide conditioning benefits without excessive build-up or greasiness.

In summary, adding CTAC will help with detangling and conditioning, and it does not cause hair loss. Adjusting the concentration of conditioning agents like CTAC and GuarCat is key to finding the right balance for oily hair to prevent a greasy feel while still providing conditioning benefits. Zinc PCA will continue to help address the oily scalp issue.