What is the use of aloe vera gel?
As a representative of natural plant extracts, aloe vera gel has become a perennial favorite in the skincare industry due to its gentle properties. However, controversies about its ability to fade acne scars persist. Today, we will comprehensively analyze the true efficacy of aloe vera gel from a scientific perspective.
The scientific truth about aloe vera gel for fading acne scars
1.1 The formation mechanism of acne scars
Post-inflammatory hyperpigmentation (PIH) is the main cause of acne scars, involving the activation of melanocytes and the rupture of collagen fibers. Clinical data shows that 90% of acne scars need to be improved by regulating the activity of tyrosinase.
1.2 Analysis of ingredient effects
The polysaccharides and saponins in aloe vera gel indeed have anti-inflammatory properties (confirmed by a study in the "Journal of Ethnopharmacology" in 2018), but they lack key ingredients like arbutin and niacinamide that inhibit melanin production, offering limited improvement for existing acne scars.
The core skincare value of aloe vera gel
2.1 Three-dimensional hydration system
① Aloe mucilage forms a breathable moisturizing film ② Amino acids enhance the water storage capacity of the stratum corneum ③ Polysaccharide components promote the expression of aquaporin proteins. Experiments show that continuous use can increase the moisture content of the skin by 27% (as per "Dermatology Research" 2020).
2.2 Four-level protection mechanism
• Aloe emodin inhibits histamine release (anti-itching) • Phytosterols regulate inflammatory factor TNF-α (anti-allergy) • Tannic acid contracts dilated capillaries (reduce redness) • Natural enzyme system breaks down bacterial cell walls (antibacterial)
2.3 Application in wound repair
Clinical data in the department of burns shows that a gel containing 96% aloe vera extract can reduce the healing time of second-degree burns by 4-6 days, with the mechanism closely related to stimulating fibroblast proliferation and promoting collagen reorganization.
Scientific usage guidelines
It is recommended to use aloe vera gel as a "defensive product" in the skincare routine: • Apply thickly after sun exposure to soothe • Pair with vitamin C serum to enhance antioxidant effects • Combine with hyaluronic acid to improve moisture retention • Dab on at the initial stage of acne to prevent infection
What needs to be clear is that dark acne scars require combined treatment with pulsed light or fruit acid peeling, and relying solely on plant components is difficult to achieve fundamental improvement. When choosing skincare products, it is important to set reasonable expectations and seek guidance from a dermatologist if necessary.