Brightening
Phytic Acid
Phytic Acid
植酸
- INCI
- Phytic Acid
- Family
- 植物提取物
- Typical use level
- 0.05–0.5% 作为螯合与稳定辅助;复合酸体系中可到 1–2%
- pH window
- 3.0–6.0(作为螯合剂使用时可适当放宽,但必须核算它对体系 pH 的拉低作用)
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Incompatibilities and failure points
第一条是它自己的强酸性:商品化植酸多为约 50% 的水溶液,pH 大约在 1–2,即便只加 0.2%,也可能把体系 pH 拉低半个单位以上,必须配套碱调并在调完后复测,不能凭经验免测。第二条是与金属离子类活性物的直接冲突:锌盐(PCA 锌、葡萄糖酸锌)、镁盐、铜肽这些都会被它螯合掉,活性物失效并可能出现沉淀,含铜肽的配方不要加植酸。第三条是水质:与硬水中的钙镁离子会生成不溶的植酸钙镁,表现为细密白色沉淀,生产用水必须是软化水或纯化水。第四条是与高浓度阳离子表活或阳离子聚合物形成不溶复合物,洗护体系里会起浊、降粘。与 EDTA 类螯合剂不冲突但功能重叠,通常二选一或各自降量并用。偏碱性体系(pH 大于 7)中它的表现变化明显,不建议直接使用。
Stability
分子本身热稳定性尚可,但强酸条件下长期高温可能促进部分水解为低级磷酸酯,螯合能力随之下降,所以不要让含植酸的体系长时间高温循环。它的光稳定性不是主要矛盾,真正要看的是它保护对象的状态。评估它有没有加对,最直接的办法是在 45℃ 加速试验里留一组不含植酸的对照:含多酚草本提取物的体系,加了植酸之后颜色变化通常明显放缓,这一组颜色对比比任何理论解释都有说服力,也是能拿给客户看的证据。如果成品出现返浊或白色细沉,排查顺序应该是先查生产用水硬度和是否混入了钙镁盐类,再去怀疑防腐或增稠体系。
Processing notes
绝对不要把 50% 原液直接倒进主锅:局部强酸会让附近的植提和增稠剂瞬间凝聚,形成再也搅不开的团块,这是这一支最常见的生产事故。正确做法是取配方内一部分水稀释十倍以上,再沿锅壁在搅拌状态下缓慢加入。投料顺序上建议放在水相早期、其它怕金属的活性物之前,让它先把水里的金属离子锁住,再引入维 C 衍生物、麦角硫因、多酚植提这类敏感组分,顺序反了等于让活性物先挨一轮氧化。加完植酸后统一调 pH,并在 24 小时后复测一次,含羧酸类原料的体系 pH 常有回漂。全程避免铁质器具和未钝化管路,否则一边加螯合剂一边引入金属离子。放大生产时最容易被忽略的变量是水的硬度,同一个配方换一个厂区的水,可能一批清一批浊,转厂或换水源时这一项要重新验证。
What it addresses
米糠等谷物来源的天然多磷酸化合物,对铁、铜等过渡金属离子有很强的螯合能力。在草本配方里它真正的价值是保色保味:多酚类植提在货架期变褐、变暗,很大一部分是微量金属离子催化的氧化,把这些离子锁住就能明显延缓这个过程。它本身还是一种弱酸,在复合酸体系里也用于温和的酸性调理方向,但用在这个方向时对 pH 的影响必须单独管理。
Market direction
- 中国 / CN
- 作为化妆品原料的常规使用方向,按现行原料目录与备案要求核对来源与规格,以最新官方文本为准。
- 欧盟 / EU
- 作为化妆品成分常规使用,注意其在配方中承担的功能定位与相应文件说明,以最新官方文本为准。
- 美国 / US
- 常规使用方向,若用于酸性调理方向,标签警示与使用说明按目标渠道规则复核,以最新官方文本为准。
- 亚太 / APAC
- 常规使用方向,按目标市场规则复核,以最新官方文本为准。
Listing in the China inventory
- Inventory no.
- 03146
- Standard Chinese name
- 肌醇六磷酸
- Max historical use, leave-on
- 10%
- Source
- 国家药监局 2021 年第 62 号公告 · 已使用化妆品原料目录(2021年版)
Status by market inventory (exact INCI match)
- 中国 · Inventory of Existing Cosmetic Ingredients in China (2021)
- Listed (03146)
- 印尼 · BPOM Technical Requirements for Cosmetic Ingredients (PerBPOM 17/2022)
- Not listed
- 中国 · Safety and Technical Standards for Cosmetics — prohibited and restricted
- Not on the prohibited/restricted list — not the same as unrestricted; check the full text and the responsible person
- 欧盟 · CosIng — European Commission cosmetic ingredient database
- Listed (36555) · 功能 CHELATING
- 欧盟 · Regulation (EC) No 1223/2009 — Annexes II to VI
- Not on the prohibited/restricted list — not the same as unrestricted; check the full text and the responsible person
- 东盟 · ASEAN Cosmetic Directive — Annexes
- Not on the prohibited/restricted list — not the same as unrestricted; check the full text and the responsible person
- 美国 · FDA prohibited and restricted cosmetic ingredients; color additives
- Not on the prohibited/restricted list — not the same as unrestricted; check the full text and the responsible person
- 加拿大 · Cosmetic Ingredient Hotlist
- Not on the prohibited/restricted list — not the same as unrestricted; check the full text and the responsible person
- 日本 · Standards for Cosmetics — appended tables
- Not on the prohibited/restricted list — not the same as unrestricted; check the full text and the responsible person
- 韩国 · Regulation on Safety Standards for Cosmetics
- Not on the prohibited/restricted list — not the same as unrestricted; check the full text and the responsible person
- 巴西 · ANVISA cosmetic ingredient restrictions and positive lists
- Not on the prohibited/restricted list — not the same as unrestricted; check the full text and the responsible person
- Matched on the exact INCI name; salts, esters and synonyms may be missed. The latest official text prevails.
Basics
- Synonyms and botanical name
- 肌醇六磷酸,IP6,Inositol Hexaphosphate,Phytate,Phytic Acid
- CAS
- 83-86-3
- Suits formats
- Serum · Essence · Toner · Lotion · Cream · Gel · Sheet mask
- Halal and vegan
- 植物来源(常见米糠及谷物来源),通常可做 vegan;清真需供应商出具证明。
- Cost band
- Value
- Evidence strength
- 高
Others in this family
- Imagery pendingGlycyrrhiza Glabra Root ExtractSoothing
- Imagery pendingScutellaria Baicalensis Root ExtractAntioxidant
- Imagery pendingSalvia Miltiorrhiza Root ExtractAntioxidant
- Imagery pendingAngelica Sinensis Root ExtractSoothing
- Imagery pendingPaeonia Lactiflora Root ExtractSoothing
- Imagery pendingPanax Ginseng Root ExtractAnti-ageing
Compiled from published formulation knowledge and factory experience for selection reference. Not an efficacy claim; use levels describe common published ranges, not regulatory limits; market availability is governed by the latest official texts and reviewed by the brand and its responsible person.