Phloretin

Phloretin (Purity ≥98.0%-99.0% HPLC / Natural Apple Extract / Nano-Dispersible) | Gold Standard Dihydrochalcone Active for Transdermal Penetration, Tyrosinase Inhibition & Photoprotection

1. Product Overview & Value Proposition

Phloretin (3-(4-hydroxyphenyl)-1-(2,4,6-trihydroxyphenyl)propan-1-one, 根皮素), isolated and purified from the peel and subterranean root bark of Malus domestica Borkh. (Apple), represents an elite, multi-functional dihydrochalcone bioactive celebrated in clinical cosmeceuticals and aesthetic dermatology. While raw apple extracts contain predominantly the glycosylated precursor phloridzin (phloretin-2′-O-glucoside), our high-purity processing cleaves the sugar moiety to liberate pure, aglycone Phloretin. Structurally, Phloretin features a flexible three-carbon linker connecting two phenolic rings adorned with four hydroxyl groups. This planar yet pliable diphenylpropane framework endows the molecule with a dual biological identity: an exceptionally potent radical-scavenging antioxidant and nature’s most effective natural transdermal penetration enhancer.

In topical dermatological biophysics, the stratum corneum’s densely packed, semi-crystalline lamellar lipid bilayers constitute a formidable barrier against hydrophilic and high-molecular-weight actives. Phloretin’s amphiphilic balance allows it to insert directly between the hydrocarbon tails of intercellular ceramides and cholesterol. By lowering the phase-transition temperature of stratum corneum lipids and inducing reversible lipid fluidization, Phloretin reduces barrier resistance, dramatically enhancing the transdermal permeation, cellular uptake, and depot accumulation of co-formulated actives (such as Vitamin C, Ferulic Acid, Resveratrol, and peptides). Most notably, Phloretin is the core driving active in the renowned “Phloretin CF” formulation paradigm (2% Phloretin + 10% L-Ascorbic Acid + 0.5% Ferulic Acid), proven to deliver superior photoprotective efficacy against atmospheric ultraviolet and ozone pollution compared to Vitamin C alone. Concurrently, Phloretin competitively inhibits tyrosinase, suppresses sebaceous gland lipid synthesis by downregulating sterol regulatory element-binding protein-1 (SREBP-1), blocks elastase and MMP-1 collagenase degradation, and mitigates advanced glycation end-product (AGE) formation. We supply distinct commercial grades tailored to precise formulation environments:

• Ultra-Pure Clinical & Prestige Grade (≥ 98.0%–99.0% HPLC): Snow-white microcrystalline powder stripped of botanical waxes and tannins, engineered for high-end antioxidant serums, medical-grade brightening lotions, and post-procedure formulations.
• Standard High-Potency Grade (≥ 70.0%–90.0% HPLC): Cost-effective active powder designed for anti-acne emulsions, clarifying daily moisturizers, and mass-market brightening skincare.
• Cold-Water-Soluble (CWS) Microencapsulated & Nano-Liposomal Grades (5%–10%): Utilizing cyclodextrin complexation and phospholipid nano-emulsification to overcome native hydrophobic insolubility, allowing instant, 100% transparent dissolution in aqueous toners, essence waters, and post-laser sheet masks without crystal precipitation.
• Oral Metabolic & Glucose Disposal Formulations: High-purity dietary grades for functional capsules and beverage mixes, acting via glucose transporter (GLUT2) inhibition and cellular AMPK activation to support healthy postprandial glycemic dynamics.

As an established bulk Phloretin manufacturer and direct botanical active supplier, we source raw apple biomass from sustainable, non-GMO orchards across Shaanxi and northern regional agricultural corridors. Our facilities employ closed-loop hydro-ethanolic extraction, enzymatic deglycosylation, continuous macroporous resin chromatography, and molecular crystallization. To empower agile skincare brands, formulators, and contract manufacturing organizations (CMOs), we pair uncompromising analytical quality with flexible commercial terms: accessible low MOQ procurement for benchtop pilot trials, multi-ingredient shipment consolidation across our cosmetic bioactives (Ferulic Acid, Bakuchiol, Ectoine, L-Ergothioneine, PDRN, Glabridin), and dedicated on-the-ground China-wide raw material sourcing assistance tailored to your exact manufacturing requirements.

2. Product Specifications (Analytical Quality)

3. Functional Applications (Mechanism of Action)

Deploying pharmaceutical-grade Phloretin across topical antioxidant serums, clinical blemish-control formulations, and anti-photoaging treatments provides scientifically verified cellular and biophysical mechanisms:

• Intercellular Lipid Fluidization & Transdermal Penetration Enhancement: Phloretin acts as an exceptional natural penetration enhancer. Its planar dihydrochalcone structure inserts between the hydrocarbon fatty-acid chains of stratum corneum ceramides and cholesterol. By disrupting the rigid, close packing of the lipid lattice and increasing local membrane fluidity, Phloretin lowers the barrier resistance of the stratum corneum, accelerating the transdermal flux and intracellular bio-accumulation of co-formulated active molecules (such as L-Ascorbic Acid, Ferulic Acid, and Peptides) by several-fold.
• Synergistic Atmospheric Pollution & Ozone Defense (The Phloretin CF Matrix): In clinical trials evaluating atmospheric skin aging, the combination of 2% Phloretin with 10% L-Ascorbic Acid and 0.5% Ferulic Acid delivered unprecedented broad-spectrum photoprotection. Phloretin specifically neutralizes singlet oxygen (¹O₂) and reactive nitrogen species generated by tropospheric ozone (O₃) and UVA exposure, preventing lipid peroxidation in cell membranes, reducing sunburn cells, and suppressing p53 DNA damage markers.
• Competitive Tyrosinase Inhibition & Melanin Suppression: Interacts directly with the copper active center of the tyrosinase enzyme, blocking the catalytic conversion of L-tyrosine into dopaquinone. Furthermore, Phloretin suppresses microphthalmia-associated transcription factor (MITF) and downregulates tyrosinase-related proteins (TRP-1 and TRP-2), inhibiting melanosome maturation and clearing stubborn solar lentigines, melasma, and post-inflammatory hyperpigmentation (PIH).
• Sebum Regulation & Anti-Acne Lipogenesis Suppression: In human sebocytes, Phloretin downregulates the expression of sterol regulatory element-binding protein-1 (SREBP-1) and fatty acid synthase (FAS), curbing excessive follicular sebum hypersecretion. Concurrently, it exerts bacteriostatic activity against Cutibacterium acnes and inhibits 5-lipoxygenase (5-LOX), preventing sebum squalene peroxidation and calming inflamed, acneiform microenvironments.
• MMP-1 Collagenase & Elastase Inhibition: Ultraviolet radiation and particulate matter activate activator protein-1 (AP-1), driving the transcription of collagen-degrading enzymes. Phloretin selectively inhibits the expression and catalytic activity of Matrix Metalloproteinase-1 (MMP-1) and leukocyte elastase, shielding dermal type I and type III collagen fibrils and elastin fibers from premature enzymatic breakdown.
• Anti-Glycation & Advanced Glycation End-Product (AGE) Blockade: Traps reactive dicarbonyl intermediates (such as methylglyoxal and glyoxal), preventing them from cross-linking with structural dermal proteins. This blocks the formation of fluorescent Advanced Glycation End-products (AGEs), rescuing skin from yellowing, dull sallowness, and collagen stiffening.

4. Formulation Combinations & Trending Market Applications

Capitalize on the expanding clinical antioxidant, environmental anti-pollution, and dermatological brightening markets by formulating with our versatile Phloretin portfolio:

• The Master Clinical “Atmospheric Antioxidant & Anti-Pollution” Serum (Phloretin CF Paradigm): Our Phloretin (≥98.0%, 1.5%–2.0%) + L-Ascorbic Acid (Ultra-Fine USP, 10.0%) + Ferulic Acid (≥99.0%, 0.5%) + Propanediol / Ethoxydiglycol (15.0%–20.0%) + Sodium Hyaluronate (0.5%). The globally recognized benchmark topical antioxidant matrix for normal to oily/combination skin: Phloretin provides penetration enhancement, sebum normalization, and ozone neutralization, while Ascorbic Acid and Ferulic Acid drive collagen synthesis and provide eight-fold photoprotection against solar UV-induced erythema.
• The “Blemish-Clarifying & Dark Spot Eraser” Fluid: Our Phloretin (≥98.0%, 1.0%) + Niacinamide (≥99.5%, 4.0%–5.0%) + Bakuchiol (≥99.0%, 0.5%) + Salicylic Acid (USP, 1.5%) + Zinc PCA (1.0%). A targeted clarifying formula designed to regulate sebaceous hypersecretion, dissolve follicular keratin plugs, prevent squalene peroxidation, and accelerate the clearance of post-acne erythema (PIE) and brown marks (PIH).
• The “Post-Laser & Barrier-Penetration” Recovery Elixir: Our Water-Soluble CWS Phloretin (10%, 1.0% delivering 0.1% active) + Ceramide NP (≥98%, 0.2%) + Madecassoside 95% (0.2%) + PDRN (Sodium DNA ≥98%, 0.2%) + Ectoine (≥99.0%, 1.0%). A gentle, cold-process restorative essence designed for sensitized, post-laser, or post-peel skin to neutralize acute oxidative stress, seal intercellular lamellar bilayers, and drive cellular re-epithelialization without stinging.
• The Oral Nutricosmetic “Metabolic Tone & Anti-Glycation” Sachet: Our Pure Phloretin (≥98.0%, 50 mg) + Alpha-Lipoic Acid (ALA 300 mg) + L-Glutathione Reduced (≥98%, 250 mg) + Hydroxytyrosol (20% Powder, 25 mg delivering 5 mg HT) + Vitamin C (100 mg). A targeted beauty-from-within drink packet designed to inhibit glucose-induced protein glycation, protect systemic vascular endothelium from oxidative stress, and brighten skin tone from the inside out.

5. Why Choose Us As Your Long-Term Active Ingredient Partner?

• Flexible Low MOQ Policy: Mitigate product launch risk. As an agile low MOQ Phloretin bulk supplier, our orders start as low as 100 g for ultra-pure clinical grades (≥98%–99%), 500 g for standard cosmetic grade (90%), and 1 kg for water-soluble CWS powders (5%–10%), scaling smoothly up to recurring multi-ton commercial container contracts.
• 100% Authentic Malus domestica Sourcing: Sourced strictly from verified sustainable apple fruit peel and bark harvests. We verify complete botanical traceability and utilize HPLC chromatographic fingerprint mapping to confirm authentic dihydrochalcone configuration and zero synthetic adulteration.
• Multi-Product Portfolio Consolidation: Streamline your supply chain by sourcing your complete clinical active suite (Phloretin, Ferulic Acid, Bakuchiol, Ceramide NP, Madecassoside, Ectoine, L-Ergothioneine, PDRN, Glabridin), longevity vitamins (L-5-MTHF-Ca, β-NMN), and functional mushroom extracts under a single, cost-effective freight shipment to reduce customs overhead and landed freight costs.
• Value-Added China Sourcing Service: In addition to our dedicated apple polyphenol extraction lines and high-vacuum crystallization suites, our on-the-ground technical team audits regional raw material cooperatives in Shaanxi and northern orchards, validates HPLC purity testing paperwork, and procures specialized functional ingredients across China tailored to your exact manufacturing roadmap.

6. Quality & Supply Chain Assurance

• Sustainable Raw Biomass Extraction: Sourced strictly from verified, sound apple peel and root bark collected as sustainable by-products of food processing. Raw biomass undergoes rapid low-temperature drying to prevent spontaneous enzymatic browning or polyphenol oxidase (PPO) degradation.
• Enzymatic Deglycosylation & High-Purity Refining: Native phloridzin is cleaved using immobilized enzymatic hydrolysis, followed by automated closed-loop aqueous ethanol extraction, multi-stage macroporous resin chromatographic fractionation, and vacuum crystallization. Completely free from hazardous petrochemical solvents (such as chloroform, benzene, or petroleum ether) to ensure residual solvents comply with USP <467> and European Cosmetic Regulation limits.
• Validated HPLC Analytical Standardization: Every commercial batch is tested against certified USP primary reference standards using High-Performance Liquid Chromatography (HPLC-UV at 285 nm). We strictly quantify pure Phloretin, ensure residual phloridzin remains ≤ 1.0%, and limit total related substances to ≤ 1.0%, preventing formula discoloration or batch-to-batch variation.
• Formulation Compatibility & Non-Browning Stability: High-purity Phloretin (≥98%) is white to off-white, preventing the unsightly yellow-brown tinting caused by crude extracts. When pre-dissolved in cosmetic glycols (propanediol, ethoxydiglycol) or formulated as a CWS nano-dispersion, it maintains clarity and resists oxidative browning across pH 4.0 to 6.5.
• Comprehensive ICP-MS & Heavy Metal Screening: Batch-tested via high-resolution ICP-MS to ensure heavy metals (Lead, Arsenic, Cadmium, Mercury) strictly comply with California Prop 65, European Cosmetic Regulation (EC) No 1223/2009, and China Safety and Technical Standards for Cosmetics. Sealed in food/pharma-grade double-polyethylene liners within light-proof aluminum bottles (100 g, 500 g, 1 kg) and heavy-duty 25 kg fiber export drums.

7. FAQ

Q1: What is the primary functional difference between Phloretin and Phloridzin?
A1: Both are hallmark apple-derived dihydrochalcones, but their chemical structures and topical activities differ fundamentally:

• Phloridzin: The naturally occurring glucoside form (phloretin-2′-O-glucoside). The attached bulky sugar moiety renders it highly water-soluble but severely limits its ability to cross the lipophilic stratum corneum. It is primarily utilized in oral metabolic research as a sodium-glucose cotransporter (SGLT) inhibitor.
• Phloretin: The pure aglycone (sugar-free) molecule. Lacking the polar glucose ring, Phloretin is significantly more lipophilic and biologically active. It easily intercalates into stratum corneum lipid bilayers to act as a transdermal penetration enhancer, tyrosinase inhibitor, and atmospheric antioxidant. High-end cosmeceuticals mandate pure Phloretin.

Q2: Why is Phloretin specifically recommended for normal-to-oily and blemish-prone skin in antioxidant serums?
A2: While the classic CE Ferulic formula (Vitamin C + Vitamin E + Ferulic Acid) is exceptionally nourishing for dry and normal skin, Vitamin E (alpha-tocopherol) can occasionally feel heavy or comedogenic on lipid-rich or acne-prone skin. The “Phloretin CF” formulation replaces Vitamin E with 2% Phloretin. Phloretin downregulates sebocyte lipid synthesis, suppresses Cutibacterium acnes-mediated inflammation, inhibits squalene peroxidation, and delivers a lightweight, non-greasy dry-down texture ideal for combination, oily, and breakout-prone complexions.

Q3: How do formulators dissolve pure Phloretin powder into aqueous cosmetic serums?
A3: Pure crystalline Phloretin has very low solubility in plain room-temperature water (~0.05 g/L). Formulators incorporate it cleanly using three proven techniques:

• Glycol Pre-Dissolution: Dissolve Phloretin powder into 10%–20% cosmetic glycols (such as propanediol, 1,3-butylene glycol, ethoxydiglycol, or dimethyl isosorbide) at 40°C–50°C, then blend into the main formulation phase.
• Alcohol Solubilization: Freely soluble in ethanol (~10 g/100 mL at 25°C) for fast-absorbing, quick-drying clarifying serums.
• Water-Soluble CWS Grade: For clear toners, hydrogels, and sheet masks, utilize our water-dispersible CWS or nano-liposomal grade (5%–10% active), which dissolves instantaneously and transparently in room-temperature water without heating or crystal precipitation.

Q4: What is the clinically supported usage percentage of Phloretin in finished cosmetic products?
A4: Formulating guidelines depend on the active specification and target application:

• Clinical Antioxidant & Photoprotective Serums (Phloretin CF): 1.5% to 2.0% of pure Phloretin powder (the clinical benchmark dose paired with 10% L-Ascorbic Acid + 0.5% Ferulic Acid).
• Skin Brightening & Dark Spot Correctors: 0.5% to 1.5% (often paired with Niacinamide or Bakuchiol).
• Blemish-Clarifying Lotions & Daily Moisturizers: 0.5% to 1.0%.
• Aqueous Toners & Clear Sheet Masks: 1.0% to 2.0% of our water-soluble CWS 10% powder.
• Formulating Window: Optimal formulation pH is mildly acidic to neutral (pH 4.0 to 6.5); stable when added during the cool-down phase (<45°C).

Q5: What is the MOQ for bulk Phloretin orders?
A5: We support agile product commercialization with flexible minimum order quantities starting from just 100 g for ultra-pure clinical grades (≥98%–99%), 500 g for standard cosmetic grade (90%), and 1 kg for water-soluble CWS powders (5%–10%), scaling smoothly up to recurring multi-ton commercial manufacturing contracts.

8. References

1. PubChem: Phloretin Compound Summary (CID 4788) – National Center for Biotechnology Information.
2. PubMed Central: Protective Effects of a Topical Antioxidant Mixture Containing Vitamin C, Ferulic Acid, and Phloretin Against Ultraviolet- and Ozone-Induced Cutaneous Damage – National Institutes of Health research database.

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