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BIOSPHERE-AI一つの植物、東方の使命。

Soothing · Repair · Hydrating · Conditioning

Allantoin

Allantoin

尿囊素

INCI
Allantoin
Family
活性物
Typical use level
0.1–0.5%;室温水中溶解度约0.5%左右,超过这一量级必须配增溶方案
pH window
4.0–8.0(4–7区间最稳,强碱下会水解)

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Incompatibilities and failure points

1)与高电解质体系(高盐、氯化钠增稠的表活配方)共存时溶解度进一步下降,析晶风险显著上升。2)与高乙醇体系搭配时,乙醇并不助溶,反而降低其在水中的溶解度,货架期析出针状结晶。3)与尿素、氨基酸类等高浓度水溶性保湿剂叠加,体系总溶质浓度上去,低温时更容易过饱和。4)在pH高于9的强碱体系(如部分皂基)中长期存放会水解失效。5)与深色多酚类草本提取物本身不发生化学反应,但析出的结晶会把提取物颜色裹进去,外观上表现为"有色小颗粒",客户往往误判为微生物污染或原料变质。

Stability

化学性质很稳定:耐热、可随水相加热溶解,不见光变色、不易氧化,含量在货架期内基本不掉。它的失效形式几乎全是物理性的——热态溶清,降温或低温储运时过饱和析出针状晶体,外观上像"长毛"或碎玻璃渣,是消费者投诉率很高的外观缺陷。25℃水中溶解度约0.5%,温度每下降10℃溶解度明显下降,因此冬季运输、冷库暂存、北方仓储都是高发场景。判定必须用低温循环(5℃放置48小时以上再回温观察),常规45℃加速试验对这条原料完全无效。

Processing notes

1)用量守住0.5%以内。想在文案上写更高浓度就必须换方案(多元醇预溶,或改用其它可溶规格),不要靠"多搅一会儿"硬溶。2)水相加热到60–70℃溶解,搅拌到完全澄清、无未溶颗粒为止;残留的未溶颗粒会成为后期结晶的晶种,是最隐蔽的返工原因。3)建议单独做预溶母液:取部分配方水加热溶清后过筛网,再并入主锅。4)冷却过程避免局部急冷,夹套直接通冰水会让贴壁区先结晶,而且结晶不再回溶。5)放大生产的坑是锅底与搅拌死角沉底未溶,小样几分钟溶清并不代表大锅同样溶清;打料前从锅底取样确认无颗粒。6)成品放行前做一次低温循环观察,这一项能挡掉这条原料绝大部分的返工。

What it addresses

结构简单的小分子,常用于舒缓与角质调理方向,肤感中性、几乎不影响体系,加上价格极低,是各类草本配方的常规配角。它的技术难点不在化学而在溶解度:室温水中的溶解上限很低,配方师按"多加一点更好"的思路提量,货架期就会以针状结晶的形式还回来。

Market direction

中国 / CN
在中国属于常规使用的化妆品原料,按产品分类走对应备案或注册路径;以最新官方文本为准。
欧盟 / EU
欧盟市场常规使用,安全评估中注明来源与纯度;以最新官方文本为准。
美国 / US
美国市场作为普通化妆品成分常规使用;部分用途下的表述需由法规复核,以最新官方文本为准。
亚太 / APAC
日韩及东南亚主要市场常规使用,须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.
04823
Standard Chinese name
尿囊素
Max historical use, leave-on
8%
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 (04823)
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 (31411) · 功能 SKIN CONDITIONING, SKIN PROTECTING, SOOTHING
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
尿囊素,脲基海因,5-脲基乙内酰脲,Allantoin,天然存在于聚合草 Symphytum officinale
CAS
97-59-6
Suits formats
Cream · Lotion · Gel · Toner · Essence · Sheet mask · Cleanser
Halal and vegan
化妆品级多为合成来源,通常可做vegan,但起始物料需供应商书面确认;清真需供应商出具证明。
Cost band
Value
Evidence strength

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.