This is a summary of research papers and studies
from the National Center for Biotechnology Information (NCBI)
ABOUT GOTU KOLA EXTRACT
Centella asiatica, commonly referred to as Gotu Kola, Cica, tiger grass, or Indian Pennywort, is a perennial herbaceous plant belonging to the Apiaceae family. Traditionally recognized in Asian medicine as the "herb of longevity," it has been utilized for centuries across India, China, and Indonesia for its potent medicinal properties. In modern dermatology and cosmetology, Gotu Kola extract has emerged as a premier ingredient due to its multifaceted ability to soothe, heal, and rejuvenate the skin.
Properties
The primary benefits of Gotu Kola are attributed to its unique chemical composition, specifically a group of pentacyclic triterpenoids known as centelloids. These active constituents include:
- Asiaticoside: Renowned for its ability to induce collagen synthesis and elevate antioxidant levels in healing tissues.
- Madecassoside: Highly valued for its wound healing properties and its efficiency in treating hypertrophic wounds and inflamed skin. It also plays a critical role in skin hydration by stimulating the production of hyaluronic acid.
- Asiatic Acid and Madecassic Acid: These exhibit potent anti-inflammatory and antioxidant effects. Asiatic acid specifically has been noted for its potential to inhibit excessive collagen formation in keloids.
The extract contains flavonoids, tannins, and polyphenols, which contribute to its capacity to scavenge free radicals and protect against environmental damage.
Functions
Gotu Kola targets several key phases of skin health and repair, primarily the stimulation of fibroblasts, the cells responsible for maintaining the skin's structural integrity.
Collagen Regulation
Gotu Kola promotes the synthesis of Type I and Type III collagen. It enhances the density and quality of the extracellular matrix, which is essential for skin firmness and the maturation of scars.
Antioxidant Defense
The extract acts as a powerful antioxidant, inhibiting the generation of free radicals.
Anti-Inflammatory Action
Gotu Kola inhibits pro-inflammatory cytokines. It also suppresses enzymes like cyclooxygenase-2 (COX-2) and matrix metalloproteinases, which otherwise contribute to tissue damage during inflammation.
Skin Benefits
Gotu Kola extract offers a wide spectrum of benefits for various skin conditions, ranging from aesthetic concerns like aging to clinical issues like chronic wounds.
Wound Healing and Scar Management
Gotu Kola is perhaps most famous for its healing effectiveness. It accelerates wound closure by promoting the formation of new blood vessels and increasing epithelialization and wound closure. In the case of scars, it balances collagen production, preventing the overgrowth associated with keloids while ensuring the wound is strong and supple.
Anti-Aging
Gotu Kola addresses both wrinkles and hydration. Its ability to stimulate collagen production helps reduce the appearance of eye and lip wrinkles. Furthermore, it enhances skin hydration by stimulating hyaluronic acid secretion. Experimental data suggests that Gotu Kola protects skin from oxidative stress caused by UVA radiation, which is a primary driver of premature aging.
Acne and Blemish Control
For acne-prone skin, Gotu Kola provides a dual benefit: it possesses antibacterial properties against Propionibacterium acnes and reduces the redness and swelling associated with inflammatory lesions. By inhibiting pro-inflammatory mediators, it decreases the number of papules and pustules. Additionally, its collagen-stimulating properties are effective in improving the appearance of acne scars.
Skin Barrier and Sensitivity
Gotu Kola is a cornerstone for treating sensitive and reactive skin. It strengthens the skin barrier, reducing transepidermal water loss (TEWL) and protecting the skin from irritants. In patients with atopic dermatitis, extracts of the herb have been shown to relieve itching and reduce skin inflammation. It is often recommended by dermatologists to help the skin tolerate more aggressive active ingredients.
Lightening and Hyperpigmentation
The extract exhibits lightening properties by inhibiting the tyrosinase enzyme, which is the key driver of melanin biosynthesis. By regulating melanin production, it helps reduce the appearance of dark spots and hyperpigmentation, leading to a more radiant and even skin tone.
Safety
Gotu Kola is generally regarded as safe and well-tolerated by most skin types, including those with rosacea or acne.. However, in extremely rare cases, individuals may experience allergic contact dermatitis, redness, or a burning sensation. To minimize risks, experts recommend a patch test on a discrete area of skin 24 hours before full application.
Conclusion
The scientific validation of Gotu Kola extract confirms its status as a versatile and powerful botanical in skincare. From its fundamental role in stimulating collagen and hyaluronic acid to its protective effects against UVA-induced oxidative stress, it provides a comprehensive approach to skin health.