Lemon gel has astringent qualities due to its acidic level. Its good for acne treatment Antimicrobial effects. Skin or hair lightening. Psoriasis and dandruff treatment Increased collagen. Antioxidant. Lemon juice naturally contains vitamin C, an antioxidant that may help reduce skin damage and premature aging. Astringent qualities. Due to its high pH levels, lemon can decrease oil on the skin and reduce inflammation .Antifungal.