Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

QUERCUS ROBUR BARK EXTRACT.

Valuable CAS 71011-28-4 / ASTRINGENT

Derived from the bark of the English oak, Quercus Robur Bark Extract is a potent source of tannins, flavonoids, and phenolic compounds. It delivers multifaceted benefits, acting as a robust antioxidant to protect the skin and an effective astringent to refine pores and manage oil production.

Summary

antioxidant astringent anti-inflammatory soothing skin-barrier-support sebum-regulation collagen-boosting skin-renewal antimicrobial wound-healing skin-brightening microcirculation-enhancement

Science

Mechanism of Action

This extract exerts its effects primarily through its rich content of tannins, flavonoids, and various phenolic compounds. It functions as a strong antioxidant, actively neutralizing free radicals to shield skin cells from environmental damage and oxidative stress. Its inherent astringent qualities help to visibly tighten the skin, thereby minimizing the appearance of pores and regulating excess sebum. Furthermore, it aids in reducing inflammation and irritation, fortifies the skin's natural protective barrier, and supports cellular renewal and collagen synthesis, which collectively contribute to improved skin texture and a reduction in the visibility of fine lines. The tannins also impart antimicrobial and wound-healing properties, while the extract generally promotes enhanced skin microcirculation and a soothing effect to alleviate redness and sensitivity.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 In vitro studies indicate antidiabetic activity (alpha-glucosidase inhibition) at concentrations ranging from 3.88-5.60 µg/mL.
  2. 02 An in vitro anti-tyrosinase effect, relevant for skin brightening, was observed using a hydroethanolic extract at 79.8 µg/mL.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

For optimal stability, store in tightly sealed containers in a cool, dry environment, protected from both heat and light. Under these conditions, a shelf life of 6 months or longer can be expected.

Conflicts

  • The high concentration of tannins within the extract may interact with and potentially denature proteins present on the skin's surface, which could lead to a compromised skin barrier function.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

Generally regarded as safe for use in cosmetic and personal care formulations. However, individual allergic reactions or sensitivities may occur. A preliminary patch test is specifically recommended for individuals with sensitive skin to assess compatibility.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Quercus Robur Bark Extract is a valuable botanical ingredient offering a broad spectrum of benefits, including antioxidant defense, pore refinement, and soothing properties, though its comprehensive *in vivo* clinical efficacy for specific cosmetic claims awaits further detailed investigation.

Related

Similar Ingredients

Finding similar ingredients…