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CITRUS GRANDIS.

Valuable / NOT REPORTED

A multifunctional botanical powerhouse derived from grapefruit and pomelo, delivering high-potency antioxidants and natural antimicrobial benefits. It serves a dual role in precision skincare as both a texture-refining astringent and a biological shield against oxidative stress.

Antioxidant Astringent Antimicrobial Skin-Conditioning Brightening Agent

Science

Operates through a complex of vitamins (A, C, E), flavonoids, and polyphenols to neutralize free radicals and inhibit oxidative damage. Its natural fruit acids facilitate mild enzymatic exfoliation for cell renewal, while its polysaccharide-amino acid matrix provides targeted hydration. Additionally, it exhibits broad-spectrum bactericidal and fungicidal activity, effectively stabilizing formulations and protecting the skin microbiome.


Research

High confidence
Effective range 0.1–15%
Optimal

1%

Key findings

  1. 01 Concentrations of 0.1% to 1.0% demonstrate significant broad-spectrum antimicrobial efficacy in vitro.
  2. 02 Human Repeat Insult Patch Tests (HRIPT) confirm that concentrations up to 0.16% are non-sensitizing and non-irritating.
  3. 03 In vitro data indicates antiallergic effects via inhibition of cell degranulation at concentrations as low as 0.005%.
  4. 04 Safety assessments report a maximum use concentration of 15% in facial and neck formulations.

Transparency

Commonly dusted
Min. effective
0.1%
Red flag below
0.05%

Often included at negligible percentages (below 0.05%) for label claims or fragrance. Formulations must reach at least 0.1% to utilize its antimicrobial and antioxidant properties effectively.


The Formula

Solubility
Both
Optimal pH 2 – 3.5
0 7 14

Stability

Chemically stable at room temperature; however, temperatures below 15°C may cause reversible cloudiness or sedimentation which does not impact bioactivity.

Synergies

  • L-Ascorbic Acid
  • Tocopherol
  • Glycerin

Conflicts

  • Carbomer
  • Anionic emulsifiers
  • Strong surfactants

Safety

CIR Status
Safe with restrictions
Max tested
15%
Pregnancy
Safe
Sensitization risk Moderate

Leave-on products are restricted to a maximum of 15 ppm 5-methoxypsoralen (5-MOP) to prevent photosensitivity. Due to furanocoumarin content, daytime use requires broad-spectrum SPF application.


Your Skin

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

A highly effective botanical for antioxidant protection and oil regulation, provided it is formulated below photosensitivity thresholds and above functional dusting levels.


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