INCI name: RUTINYL SUCCINATE<\/p>\n
01 \u00b7 MARKET CONTEXT \u00b7 \u5e02\u573a\u80cc\u666f<\/p>\n
Daily environmental exposure keeps skin under chronic oxidative stress \u2014 and this has rewritten what brands expect from an active ingredient.<\/p>\n
01Environmental load is daily exposure.<\/b>UV, ozone, and particulate pollutants drive reactive oxygen species (ROS) generation in skin, linking environmental stress to visible dullness, redness, and premature aging signs.<\/p>\n
02Sensitivity and visible redness have gone mainstream.<\/b>Sensitive-skin positioning has moved from niche dermo-skincare into the core skincare development agenda.<\/p>\n
03Well-known molecules win trust.<\/b>Brands prefer actives with a name, a structure, and published literature over anonymous antioxidant blends.<\/p>\n
04Multifunctionality wins formulas.<\/b>A well-characterized molecule supporting multiple defensible claims significantly reduces formulation cost and complexity.<\/p>\n
The biological map of oxidative stress is well established \u2014 the bottleneck is getting a long-validated defense molecule into an elegant formula. The opportunity is not \u201cyet another antioxidant,\u201d but bringing a proven flavonoid molecule into real formulations.<\/b><\/p>\n
Sources: Rinnerthaler et al., Oxid. Med. Cell. Longev., 2015; Ganeshpurkar & Saluja, Saudi Pharm. J., 2017.<\/p>\n
02 \u00b7 THE MOLECULE \u00b7 \u8ba4\u8bc6\u5206\u5b50<\/p>\n
Rutin \u2014 quercetin-3-O-rutinoside<\/b><\/p>\n
C27H30O16 \u00b7 CAS 153-18-4 \u00b7 flavonol glycoside<\/p>\n
A flavonol glycoside built from the quercetin aglycone and the rutinose disaccharide. Its catechol B-ring and conjugated chromone core are among the most thoroughly studied radical-scavenging pharmacophores in natural-product science.<\/p>\n
Abundant natural sourcing<\/b> \u2014 concentrated in Sophora japonica flower buds, buckwheat, citrus, and asparagus; a molecule consumers already ingest in their daily diet.<\/p>\n
The \u201cvitamin P\u201d heritage<\/b> \u2014 in 1936 Szent-Gy\u00f6rgyi linked citrus flavonoids, including rutin, to capillary resistance (Nature), opening nearly a century of microvascular research.<\/p>\n
Deep biological evidence<\/b> \u2014 radical scavenging, metal-ion chelation, and modulation of inflammation-related pathways documented across hundreds of peer-reviewed studies and reviews.<\/p>\n
Clear regulatory identity<\/b> \u2014 the EU CosIng inventory lists RUTIN with antioxidant, skin-conditioning, and hair-conditioning functions: a recognized cosmetic identity, not an unfamiliar newcomer.<\/p>\n
Sources: Ruszny\u00e1k & Szent-Gy\u00f6rgyi, Nature, 1936, 138, 27; Afanas\u2019ev et al., Biochem. Pharmacol., 1989, 38, 1763\u20131769; Gull\u00f3n et al., Trends Food Sci. Technol., 2017, 67, 220\u2013235; European Commission CosIng inventory.<\/p>\n
03 \u00b7 THE FORMULATION PROBLEM \u00b7 \u914d\u65b9\u6311\u6218<\/p>\n
0.125 g\/L<\/b><\/p>\n
Rutin water solubility at 25 \u00b0C \u2014 roughly 8 liters of water per gram of active.<\/p>\n
log P +0.85<\/b><\/p>\n
n-Octanol\/water partition coefficient (pH 7.4): a crystalline glycoside with neither hydrophilic nor lipophilic affinity.<\/p>\n
Rutin\u2019s planar polyphenolic backbone stacks into stable crystal lattices; its glycosidic hydroxyls are locked in intermolecular hydrogen bonds instead of hydration.<\/p>\n
What this means at the bench<\/b><\/p>\n
Precipitates in water-based systems<\/b> \u2014 serums, toners, and gels cannot carry an effective dose.<\/p>\n
Depends on solubilizers and co-solvents<\/b> \u2014 extra surfactant or alcohol load, sacrificing skin feel and mildness.<\/p>\n
Recrystallizes on shelf<\/b> \u2014 haze, sediment, and active-content drift in finished products.<\/p>\n
Excluded from modern formats<\/b> \u2014 clear serums, cold-process manufacturing, and water-based scalp products are essentially off-limits.<\/p>\n
The problem was never the biology \u2014 it is the physical form of the molecule.<\/b><\/p>\n
Sources: Pedriali et al., Quim. Nova, 2008, 31, 2147\u20132151 (solubility, log P); Gull\u00f3n et al., Trends Food Sci. Technol., 2017, 67, 220\u2013235.<\/p>\n
04 \u00b7 THE SOLUTION \u00b7 \u89e3\u51b3\u65b9\u6848<\/p>\n
RutaSuc™ is rutinyl succinate: succinate groups introduced onto rutin\u2019s sugar moiety. The design logic is direct \u2014 keep the flavonoid pharmacophore, change the molecule\u2019s relationship with water.<\/p>\n
Ionizable carboxyls<\/b> \u2014 up to six succinyl groups introduce hydrophilic carboxyls along the rutinose chain.<\/p>\n
80\u2013115\u00d7 higher water solubility<\/b> \u2014 from 0.125 g\/L to 10\u201314.4 g\/L, measured independently by two research groups.<\/p>\n
A genuinely hydrophilic flavonoid<\/b> \u2014 partition coefficient flips from log P +0.85 to \u22121.13, a complete reversal of polarity class.<\/p>\n
Ready-to-use form<\/b> \u2014 supplied as a 5% aqueous solution, added directly to the water phase with no solubilization step.<\/p>\n
Rutinyl succinate: 14.4 g\/L (Sachetto et al., 2022) and 10.0 g\/L (Pedriali et al., 2008) \u2014 an 80\u2013115\u00d7 improvement over native rutin (0.125 g\/L).<\/p>\n
The same flavonoid core \u2014 a completely different formulation reality.<\/b><\/p>\n
Sources: Pedriali et al., Quim. Nova, 2008, 31, 2147\u20132151; Sachetto et al., Front. Pharmacol., 2022, 13, 828269.<\/p>\n
04 \u00b7 THE SOLUTION \u00b7 MOLECULAR ARCHITECTURE<\/p>\n
A defined family of 1\u20136 substitution forms, centered on DS 2\u20133 (30.7% \/ 27.6%); the flavonoid aglycone fragment (m\/z 303) is preserved across all forms.<\/p>\n
Spectroscopically confirmed identity<\/b><\/p>\n
\u00b7 The characteristic flavonoid UV-Vis absorption bands remain at 271 \/ 352 nm after succinylation \u2014 the chromophore is unchanged.<\/p>\n
\u00b7 1H \/ 13C-NMR confirms esterification occurs only at sugar hydroxyls; the aromatic 5-OH signal is intact.<\/p>\n
\u00b7 LC-MS: each succinyl unit adds 100 Da, exactly as expected.<\/p>\n
Sources: Pedriali et al., 2008; Sachetto et al., 2022.<\/p>\n
05 \u00b7 MECHANISM \u00b7 \u4f5c\u7528\u673a\u5236<\/p>\n
The mechanism framework integrates rutin pharmacology literature with experimental data on rutin succinate; pathway-level evidence is detailed in the following sections.<\/p>\n
06 \u00b7 EVIDENCE \u00b7 \u5b9e\u8bc1\u6570\u636e<\/p>\n
Model: luminol\/AAPH chemiluminescence (Total radical-trapping Antioxidant Parameter, TRAP), 0.2\u20131.0 \u00b5M, Tris buffer pH 9.0, 37 \u00b0C. Test items: rutin succinate (n = 3.03 \u00b1 0.08), rutin (n = 3.53 \u00b1 0.07), Trolox\u00ae reference (n = 2). All means differ significantly at the 0.05 level.<\/p>\n
\u22481.5\u00d7 Trolox\u00ae<\/b><\/p>\n
Antiradical capacity of rutinyl succinate relative to the standard water-soluble antioxidant reference<\/p>\n
The succinate groups themselves help.<\/b>At the assay pH, the deprotonated carboxyls carry negative charge and attract the cationic peroxyl radicals generated by AAPH thermolysis.<\/p>\n
Retains 86% of rutin\u2019s trapping power \u2014 in a water-compatible form.<\/b>Despite an ~80-fold gain in hydrophilicity, each molecule still traps about three radicals.<\/p>\n
Cosmetic relevance:<\/b>verified scavenging of peroxyl-type radicals \u2014 precisely the radical class that drives oxidative lipid damage in skin.<\/p>\n
Source: Pedriali et al., Quim. Nova, 2008, 31(8), 2147\u20132151. DOI: 10.1590\/S0100-40422008000800039<\/p>\n
06 \u00b7 EVIDENCE \u00b7 \u5b9e\u8bc1\u6570\u636e<\/p>\n
Model: spontaneous oxidation of rat-brain homogenate membranes; malondialdehyde (MDA) quantified as the TBA adduct at 535 nm. Test items compared on an equimolar flavonoid-core basis. Result: despite extreme hydrophilicity (log P \u22121.13), rutinyl succinate still engages membrane lipids and inhibits peroxidation by 77.9% \u2014 only ~19% below native rutin on a flavonoid-core basis. Hydrophilicity did not cost the molecule its biological reach.<\/b><\/p>\n
For skin, membrane lipid peroxidation is exactly where oxidative stress \u201cbecomes visible.\u201d<\/b><\/p>\n
Source: Pedriali et al., Quim. Nova, 2008, 31(8), 2147\u20132151. DOI: 10.1590\/S0100-40422008000800039<\/p>\n
06 \u00b7 EVIDENCE \u00b7 \u5b9e\u8bc1\u6570\u636e<\/p>\n
Macrophage inflammatory-mediator modulation (rutin, mechanistic level).<\/b>In LPS-stimulated macrophages, rutin down-regulates key inflammatory mediators such as TNF-\u03b1 and COX-2-derived prostaglandins while raising the anti-inflammatory marker IL-10 \u2014 showing the flavonoid core is a modulator of inflammatory signaling, not merely a radical scavenger.<\/p>\n
Pathway-level support (rutin, review level).<\/b>Mechanistic reviews consistently place rutin upstream of NF-\u03baB, COX-2, and iNOS \u2014 the very signaling axis that converts oxidative damage into redness, discomfort, and matrix degradation in stressed skin.<\/p>\n
The pharmacophore performing these actions is fully preserved.<\/b>Succinylation is confined to the sugar moiety; the catechol B-ring responsible for antioxidant and signaling interactions is untouched.<\/p>\n
Direct confirmation on rutinyl succinate.<\/b>Sachetto et al. showed the modified molecule retains rutin-like activity, including inhibition of protein disulfide isomerase (PDI) and interaction with plasma proteins \u2014 direct evidence that the flavonoid core still binds biological targets.<\/p>\n
Evidence-grading note: direct rutinyl succinate data (Grade A) confirm activity retention; rutin mechanistic data (Grade B) serve as supporting evidence for core preservation. No independent RutaSuc™ inflammation study is claimed.<\/p>\n
Cosmetic translation.<\/b>Redness-prone, reactive skin is essentially skin living in an overactive \u201cstress\u2013inflammation\u201d loop. An active that intercepts radicals before they reach this axis \u2014 with documented mediator modulation by its preserved core \u2014 directly answers the sensitive-skin brief.<\/p>\n
Sources: Kauss et al., Arthritis Res. Ther., 2008, 10, R19; Ganeshpurkar & Saluja, Saudi Pharm. J., 2017, 25, 149\u2013164; Sachetto et al., Front. Pharmacol., 2022, 13:828269<\/p>\n
06 \u00b7 EVIDENCE \u00b7 \u5b9e\u8bc1\u6570\u636e<\/p>\n
1936<\/b><\/p>\n
Ruszny\u00e1k and Szent-Gy\u00f6rgyi describe \u201cvitamin P\u201d: flavonoid extracts that restore capillary resistance \u2014 with rutin as the reference substance.<\/p>\n
Ninety years of capillary research.<\/b>Rutin and its semi-synthetic derivatives (troxerutin, rutin sulfates) are among the longest-studied flavonoid families in microvascular research \u2014 the scientific lineage behind the \u201cP factor.\u201d<\/p>\n
Protein-target activity retained.<\/b>Rutinyl succinate preserves rutin\u2019s inhibition of protein disulfide isomerase (PDI) and its interactions with fibrinogen and albumin \u2014 direct evidence the molecule still binds the protein targets relevant to rutin\u2019s vascular biology.<\/p>\n
Why it matters topically.<\/b>A water-compatible rutin can finally enter daily leave-on skincare \u2014 and visible redness and reactive tone are appearance concerns adjacent to microcirculation.<\/p>\n
Cosmetic translation<\/b><\/p>\n
\u00b7 Visible redness<\/b> \u2014 soothing care for reactive, redness-prone complexions<\/p>\n
\u00b7 Eye contour<\/b> \u2014 where microcirculation shows most readily through thin skin<\/p>\n
\u00b7 Post-stress recovery<\/b> \u2014 calming formats for after sun exposure and aesthetic procedures<\/p>\n
\u00b7 Even tone<\/b> \u2014 daily defense for complexion uniformity<\/p>\n
Positioning note: RutaSuc™ is a cosmetic active for appearance care. The microvascular literature on rutin-class molecules establishes mechanistic plausibility and scientific heritage \u2014 it does not constitute any therapeutic claim for finished cosmetic products.<\/p>\n
Sources: Ruszny\u00e1k & Szent-Gy\u00f6rgyi, Nature, 1936, 138, 27; Sachetto et al., Front. Pharmacol., 2022, 13:828269; Jasuja et al., J. Clin. Invest., 2012, 122, 2104\u20132113<\/p>\n
06 \u00b7 EVIDENCE \u00b7 \u5b9e\u8bc1\u6570\u636e<\/p>\n
Schematic curve reconstructed from the published absorption peaks of rutinyl succinate (\u03bbmax 271 and 352 nm, UV-Vis, Bands II and I of the flavonol chromophore). Peak positions are measured data; the curve shape is illustrative, not a measured spectrum.<\/p>\n
The chromophore survives modification.<\/b>Succinylation leaves the conjugated flavonol system unchanged \u2014 the molecule\u2019s characteristic UVA\/UVB absorption is essentially intact.<\/p>\n
A second line of defense.<\/b>RutaSuc™ is not a UV filter and makes no SPF claim. Its role is handling the oxidative chemistry UV triggers downstream \u2014 quenching radicals and protecting lipids.<\/p>\n
Formulation logic.<\/b>An ideal partner for daily-defense and after-sun concepts \u2014 complementary to sunscreen actives, never a replacement.<\/p>\n
Sources: Pedriali et al., Quim. Nova, 2008, 31(8), 2147\u20132151; Sachetto et al., Front. Pharmacol., 2022, 13:828269<\/p>\n
06 \u00b7 EVIDENCE \u00b7 \u5b9e\u8bc1\u6570\u636e<\/p>\n
The scalp is an oxidative-stress hotspot.<\/b>Sebum-rich, UV-exposed, and densely folliculated, the scalp faces a unique oxidative burden; oxidative stress at the follicle is linked to scalp discomfort and hair-quality issues (Tr\u00fceb, 2009).<\/p>\n
Hair-care regulatory basis.<\/b>The EU CosIng database lists rutin with antioxidant, skin-conditioning, and hair-conditioning functions \u2014 an established regulatory precedent for flavonoids in hair and scalp products.<\/p>\n
Built for the format.<\/b>Scalp care is dominated by watery leave-on formats \u2014 tonics, essences, sprays \u2014 precisely the systems native rutin could never enter. RutaSuc™ is supplied as a 5% aqueous solution, ready to add directly.<\/p>\n
Verified activity, the relevant radical class.<\/b>TRAP-verified peroxyl-radical trapping maps directly onto the lipid-peroxidation chemistry of sebum oxidation at the scalp surface.<\/p>\n
Concept directions<\/b><\/p>\n
\u00b7 Soothing scalp tonic<\/b> \u2014 daily leave-on antioxidant defense for sensitive, tight scalps<\/p>\n
\u00b7 Post-color\/perm calming spray<\/b> \u2014 oxidative-stress care after chemical services<\/p>\n
\u00b7 Pre-wash essence<\/b> \u2014 concentrated flavonoid delivery in a water-based essence texture<\/p>\n
\u00b7 Anti-pollution scalp mist<\/b> \u2014 an urban-defense positioning backed by a TRAP-verified active<\/p>\n
Sources: Tr\u00fceb, Int. J. Trichology, 2009, 1(1), 6\u201314; EU CosIng database, RUTIN (CAS 153-18-4); Pedriali et al., Quim. Nova, 2008<\/p>\n
07 \u00b7 FORMULATION SCIENCE \u00b7 \u914d\u65b9\u79d1\u5b66<\/p>\n
| Supplied-form property<\/th>\n | RutaSuc™ specification<\/th>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Form<\/td>\n | 5% aqueous solution of rutinyl succinate<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||
| Appearance<\/td>\n | Clear to slightly opalescent liquid, pale yellow to amber<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||
| pH<\/td>\n | 3.5 \u2013 5.5<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||
| Density (20 \u00b0C)<\/td>\n | 0.990 \u2013 1.050 g\/mL<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||
| Refractive index<\/td>\n | 1.360 \u2013 1.420<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||
| Dry residue<\/td>\n | 5 \u2013 20%<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||
| Solubility<\/td>\n | Miscible with water, glycerin, propylene glycol, and ethanol (slight opalescence)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||
| Preservative system<\/td>\n | Sodium benzoate \u00b7 potassium sorbate \u00b7 tetrasodium EDTA<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||
| Shelf life<\/td>\n | 24 months, protected from light<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n At the bench<\/b><\/p>\n Addition<\/b> \u2014 add to the water phase at any stage; no heating, no solubilizers, no neutralization step.<\/p>\n Suitable systems<\/b> \u2014 emulsions, gels, toners, serums, sprays, and hydroalcoholic systems.<\/p>\n Handling notes<\/b> \u2014 avoid strong oxidizers and prolonged exposure above 35 \u00b0C; store protected from light.<\/p>\n Settling behavior<\/b> \u2014 slight haze may appear on standing; shake before use. Normal for a high-load botanical-derived active.<\/p>\n Because RutaSuc™ is supplied pre-dissolved, the classic \u201crutin won\u2019t go in\u201d workflow \u2014 solvent hunting, heated processing, crystallization monitoring \u2014 disappears entirely.<\/p>\n Source: PuriPharm Co. Ltd. product documentation, PuriActives\u00ae RutaSuc™ supplied-form data.<\/p>\n 08 \u00b7 APPLICATIONS \u00b7 \u5e94\u7528\u65b9\u5411<\/p>\n Six fields, one active<\/h2>\nSensitive & redness-prone skin<\/b>The vitamin P heritage plus verified radical interception \u2014 soothing serums, calming essences, post-procedure care.<\/p>\n Antioxidant daily defense<\/b>Urban day creams, anti-pollution mists, and ampoule drops built around TRAP-verified, 1.5\u00d7-Trolox radical trapping.<\/p>\n Healthy aging<\/b>The matrix-stress narrative \u2014 lipid protection at the MDA level, plus mechanistic support against the oxidative signals that drive MMPs.<\/p>\n Tone & radiance<\/b>Dullness is oxidation made visible; tone-evening and brightening serums gain a credible mechanistic story.<\/p>\n Eye care<\/b>Thin skin, visible microcirculation, constant light exposure \u2014 the most natural home for the microvascular heritage.<\/p>\n Scalp care<\/b>Water-based leave-on tonics, sprays, and essences \u2014 formats that were structurally off-limits to native rutin.<\/p>\n Application fields are derived from the evidence grading summarized in the Evidence Map section; no clinical efficacy claims are made for finished products.<\/p>\n 08 \u00b7 APPLICATIONS \u00b7 \u5e94\u7528\u65b9\u5411<\/p>\n Bench concept framework<\/h2>\n
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