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Moumoujus

LACTOFERRIN.

Valuable / HAIR CONDITIONING, SKIN CONDITIONING

Lactoferrin is a multifunctional glycoprotein recognized for its extensive benefits across various skin concerns. It effectively targets inflammatory conditions, supports barrier function, provides hydration, and combats visible signs of aging, making it a robust ingredient for enhancing skin health and resilience.

Summary

Antioxidant Skin-identical ingredient Antimicrobial/antibacterial Anti-inflammatory Sebum regulator Skin barrier enhancer Hydrator Collagen booster Elastin booster Wound healing Skin tone improver

Science

Mechanism of Action

Lactoferrin operates through multiple pathways to improve skin health. It acts as a potent antimicrobial by chelating iron, thereby inhibiting the growth of acne-causing bacteria like Cutibacterium acnes. Its significant anti-inflammatory properties stem from reducing pro-inflammatory cytokines, such as IL-1α, TSLP, IL-6, and TNF-α, which calms redness and swelling. Lactoferrin also regulates excessive sebum production to prevent clogged pores. It fortifies the skin barrier by improving Transepidermal Electrical Resistance (TEER) and upregulating key proteins and genes like AQP3, Filaggrin, Involucrin, and Claudin-1. Furthermore, it enhances skin hydration and elasticity by increasing hyaluronic acid synthesis (via HAS1 expression) and stimulating fibroblasts to boost collagen and elastin production. As an antioxidant, it neutralizes free radicals, mitigating oxidative stress for anti-aging effects. It can also improve skin tone by addressing inflammation-induced hyperpigmentation and supports wound healing and bruise reduction by binding released iron.

Research

Clinical Evidence

High confidence
Effective range 0.15–0.5%
Optimal

0.5%

Key findings

  1. 01 Topical application as a gel twice daily for one month significantly improved skin moisture levels and achieved an average 40% reduction in wrinkles.
  2. 02 Topical application enhanced skin barrier function, demonstrating anti-inflammatory and moisturizing effects through improved Transepidermal Electrical Resistance (TEER) and increased expression of AQP3, Filaggrin, and Involucrin.

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
0.15%

While topical formulations can range broadly (0.1-20%), effective clinical outcomes have been observed at concentrations starting from 0.15%, indicating this as a minimum threshold for tangible benefits. However, there is no direct evidence suggesting widespread 'dusting' of this ingredient in formulations below an effective level.

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Lactoferrin is available as a white to light yellow powder. It is slightly soluble in water. No specific optimal pH range for its stability in formulations was identified in the research data.

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
20%
Sensitization risk Low

Generally regarded as very safe for topical application, with no known adverse side effects. The Environmental Working Group (EWG) confirms no known risk when applied to the skin. It is not currently listed in the Cosmetic Ingredient Review's (CIR) database. While oral intake up to 600 mg/day is considered safe, topical application up to 20% has been noted in patent literature without specific concerns.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Lactoferrin is a highly valuable ingredient for precision skincare, offering clinically supported benefits across acne management, anti-aging, barrier repair, and hydration, coupled with an excellent safety profile for diverse skin types.

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