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Moumoujus

HYPOXIS ROOPERI RHIZOME EXTRACT.

Valuable CAS - / SKIN CONDITIONING

Hypoxis Rooperi Rhizome Extract is a powerful botanical ingredient, revered for its multifaceted benefits in skincare, including significant skin brightening, anti-aging, and skin conditioning effects. It targets hyperpigmentation, stimulates collagen production, and fortifies the skin's natural defenses against environmental stressors, promoting a healthier, more radiant complexion.

Summary

Skin Brightening Antioxidant Anti-Aging Collagen Booster Skin Conditioning Anti-inflammatory Soothing

Science

Mechanism of Action

Derived from the African Potato, Hypoxis Rooperi Rhizome Extract, primarily through its active compound hypoxoside, intricately reduces melanin production in hyper-reactive melanocytes. This is achieved by inhibiting key enzymes such as tyrosine hydroxylase and dopa-oxygenase, while also suppressing tyrosinase expression, resulting in a visible lightening and evening of skin tone. Beyond pigmentation control, it exhibits potent antioxidant properties by effectively inhibiting reactive oxygen species. The extract further contributes to anti-aging by significantly stimulating the synthesis of both collagen I and collagen III. Additionally, its rich composition, including sterols, allows it to modulate immune responses, reduce inflammation, and deliver essential nutrients and moisture, thus acting as a comprehensive skin conditioning agent that soothes, repairs, and protects the skin barrier.

Research

Clinical Evidence

Medium confidence
Effective range 1–4%
Optimal

N/A

Key findings

  1. 01 In-vitro studies using a formulation containing 1-4% Hypoxis Rooperi Rhizome Extract (Darkout™) demonstrated a substantial reduction in melanin synthesis pathways: a 54% decrease in tyrosine hydroxylase activity, a 53% decrease in dopa-oxygenase activity, and an overall 51% reduction in melanin synthesis. These findings also indicated inhibition of tyrosinase expression, directly contributing to its skin brightening capabilities.
  2. 02 Further in-vitro evaluations confirmed a strong antioxidant effect with 50% inhibition of reactive oxygen species. The extract also showcased significant anti-aging potential, boosting collagen I synthesis by 242% and collagen III synthesis by 186%.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 2 – 11.5
0 7 14

Stability

Formulations incorporating Hypoxis Rooperi Rhizome Extract (e.g., Darkout™) maintain stability across a broad pH spectrum, from 2 to 11.5.

Conflicts

  • Strong exfoliating acids (to minimize irritation risk)

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

No specific safety assessments from CIR or SCCS have been identified. Side effects and adverse reactions are generally reported as uncommon, though routine patch testing is recommended for new users. An oral toxicity study of a commercial extract (45% hypoxoside) at 2000 mg/kg showed no acute oral toxicity or adverse effects.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

Hypoxis Rooperi Rhizome Extract is a valuable ingredient due to its proven multi-functional efficacy in skin brightening, anti-aging, and conditioning, coupled with a low irritancy and comedogenicity profile, making it suitable for all skin types.

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