Sticky Residue on Scalp - Use Neutrogena Anti-Residue
Sticky residue on scalp is mostly caused by product build-up on oily hair type people. The residue is caused by styling products and conditioners and it get sticky because it get mixed with scalp sebum (excess natural oil produced by your scalp). Normally it won’t go away with regular shampoo and require deep cleansing.
A clarifying shampoo with high PH value should help to solve the problem and it should only be used once or twice a week followed by a light conditioner to restore the moisture back to hair.
There is a shampoo called Neutrogena Anti-Residue Shampoo. This shampoo should only be used once a week to remove residue or build-up caused by other hair care products like styling gels, conditioners, etc...
You should continue using your favorite shampoo and use Neutrogena Anti-Residue only to cleanse your scalp once a week.