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.
Because gelatin is essentially collagen, it helps build connective tissue and is great for skin, nails and hair. It encourages your body to make more collagen. It is great for bone and joint health and can improve arthritis. It aids in digestion and helps to breakdown nutrients. (Source)