Black seed oil has several applications and benefits for problematic skin conditions. The oil is found in many health foods stores and pharmacies. Examples of applications for beauty and skin include:
It's important to read labels on any product before you use it, whether it's a gel, conditioner, shampoo, serum, or what have you. But no, all gels are not bad for your hair. 3a and strictly CG since August 2007.
Even if a shampoo contains sulfates it can still be formulated to work well for your hair. However, I want you to have the most up to date information and the reality is there are better options for cleansing our naturally dry strands.