Gels are semi-solid, jelly-like substances used in skincare, haircare, pharmaceuticals, and personal care. They are made by thickening a liquid phase (usually water) with gelling agents, resulting in a lightweight, non-greasy, and quick-absorbing texture.

Key Characteristics of Gels:

Appearance: Clear or slightly opaque, smooth, and glossy.
Texture: Lightweight, cooling, and fast-absorbing.
Feel on Skin: Non-oily, non-sticky, leaves no heavy residue.
Base: Usually water-based, making them suitable for oily, acne-prone, and sensitive skin.

Types of Gels:

Type	Description	Common Uses
Hydrogel (Water-based Gel)	High water content, light texture	Face serums, after-sun gels, moisturizers
Alcohol-based Gel	Contains alcohol for quick drying	Hand sanitizers, acne spot treatments
Oil-based Gel	Contains oils in gel form	Hair styling gels, ointments
Silicone Gel	Silicone-based, occlusive	Scar treatment, smoothing primers

Common Applications of Gels:

Skincare:
- Hydrating Gel: Aloe vera gel, hyaluronic acid gel
- Soothing Gel: Cica gel (Centella Asiatica), calendula gel
- Anti-Acne Gel: Salicylic acid gel, tea tree gel
- Brightening Gel: Vitamin C gel, niacinamide gel
Haircare:
- Hair Styling Gels
- Hair Repair Gels with keratin, collagen
Pharmaceutical/Medical:
- Scar treatment gels
- Pain relief gels
- Topical medication gels