Quick Comparison
| Centella Asiatica | Rosehip Seed Oil | |
|---|---|---|
| Typical Concentration | Used in various forms: full extract, TECA (Titrated Extract of Centella Asiatica — a standardized blend of the four key actives), or individual compounds. Concentrations vary widely (0.1-5% of active compounds). Apply morning and/or night. Safe for daily use on all skin types. | Apply 2-4 drops in the evening after water-based serums. Can be used morning (under sunscreen) but the natural retinoid content makes PM use preferred. Cold-pressed, unrefined oil is orange-red. Goes rancid relatively quickly — store in fridge and use within 3-6 months. |
| Application | Topical (serum, cream, toner, mask). TECA or pure centella extract preferred over whole plant extract for consistency. | Topical (pure oil). Apply 2-4 drops as last step of PM routine. Cold-pressed, unrefined. |
| Research Papers | 10 papers | 5 papers |
| Categories |
Mechanism of Action
Centella Asiatica
The four key triterpenoid saponins—madecassoside, asiaticoside, madecassic acid, and asiatic acid—exert distinct but complementary mechanisms. Madecassoside and asiaticoside are anti-inflammatory: they inhibit NF-κB nuclear translocation and IκB kinase activity, reducing TNF-α, IL-6, and IL-1β production in keratinocytes and dermal cells. Madecassic acid and asiatic acid (the aglycone forms) stimulate type I and III collagen synthesis in fibroblasts by upregulating collagen gene expression and procollagen production. All four compounds promote wound healing by stimulating angiogenesis via VEGF (vascular endothelial growth factor) upregulation, fibroblast proliferation and migration, and extracellular matrix remodeling. Centella extracts also increase superoxide dismutase (SOD) and catalase activity in skin cells, enhancing endogenous antioxidant defense. The triterpenes may modulate TGF-β and Smad signaling. TECA (Titrated Extract of Centella Asiatica) standardizes these actives for consistent clinical efficacy.
Rosehip Seed Oil
Natural trans-retinoic acid content (0.01-0.04%) binds RAR receptors in keratinocytes and fibroblasts, promoting cell turnover, collagen type I synthesis, and keratinocyte differentiation at gentle level without retinization. Linoleic acid (44%) supports barrier repair through ceramide synthesis, balances sebum composition (acne-prone skin often deficient). Alpha-linolenic acid (33%) converts to anti-inflammatory metabolites, supports barrier function. Beta-carotene and lycopene provide antioxidant protection and mild photoprotection. Unique combination among plant oils: natural retinoid plus essential fatty acids plus antioxidants — no other oil provides all three. Contains tocopherols. Quickly absorbed. Clinical use: scars, hyperpigmentation, fine lines — subtle but measurable anti-aging effects compared to inert oils.
Risks & Safety
Centella Asiatica
Common
Very well-tolerated. Occasionally mild tingling.
Serious
None documented.
Rare
Allergic contact dermatitis (uncommon). Purified extracts are less likely to cause reactions than crude extracts.
Rosehip Seed Oil
Common
May cause breakouts in oily/acne-prone skin. Goes rancid quickly if not stored properly.
Serious
None.
Rare
Allergic reaction (rose family).
Full Profiles
Centella Asiatica →
Also known as Cica, Gotu Kola, or Tiger Grass, Centella Asiatica is an herb used in traditional medicine for wound healing that has become one of the most popular soothing ingredients in Korean and global skincare. Its active compounds (madecassoside, asiaticoside, madecassic acid, asiatic acid) reduce inflammation, stimulate collagen production, and accelerate wound healing. Essential for sensitive and compromised skin.
Rosehip Seed Oil →
Cold-pressed from the seeds of Rosa canina, rosehip oil is rich in linoleic acid, alpha-linolenic acid, and trans-retinoic acid (a natural form of tretinoin). This makes it one of the few plant oils with genuine anti-aging activity — the natural tretinoin content promotes cell turnover and collagen synthesis. It is also high in antioxidants and is used for scars, hyperpigmentation, and fine lines.