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Barrier repair · Repair · Hydrating

Ceramide NP

Ceramide NP

神经酰胺NP

INCI
Ceramide NP
Family
脂质
Typical use level
0.05–0.5%,常见0.1%上下
pH window
4.0–8.0(自身对pH不敏感,实际由体系决定)

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Incompatibilities and failure points

1)与纯水相体系基本不相容,直接投入水剂或精华会析出白点、白絮,过滤也去不干净,这是最常见的返工原因。2)与丙二醇、丁二醇、甘油等多元醇单独共热并不能真正溶解,热态看着清、冷却后重结晶。3)与高浓度乙醇体系同样是热态假澄清,降温或低温运输时结晶析出。4)与全部由非极性成分组成的油相(高纯硅油、异十六烷、轻质酯)相容性差,需要有一定极性的油脂、多元醇酯,或胆固醇加脂肪酸的共熔体系带它。5)与乳化能力弱、单一乳化剂的体系搭配时,冷却后会从乳液中泛出,表现为膏体发粗、涂抹有颗粒感。

Stability

分子本身对光、氧、pH都相当稳定,不易氧化变色,因此它的失效形式几乎全是物理性的。熔点高(通常在90℃以上),冷却过程中一定会经历再结晶,成品有没有白点取决于降温速率与共存脂质体系,而不是储存条件。最能暴露问题的测试是低温循环(5℃与室温之间往返)与冻融,应至少做三轮以上再判定;只做45℃高温加速试验完全测不出这条原料的真实风险。已经析出的结晶回温后通常不会自行溶回,属于不可逆缺陷。

Processing notes

1)绝不直接投料。三条可行路线:一是与胆固醇、硬脂酸等按类皮脂比例做成脂质预混,与乳化剂在油相共熔;二是采购已增溶的液体规格或预分散体,浓度低但省工艺;三是走脂质体或多层乳液的外包工艺。2)油相共熔通常需要升到80–90℃并保温至肉眼完全澄清、无任何颗粒后才能乳化,温度不足是白点的第一来源。3)乳化后降温不要过快,也不要在40℃以下长时间静置不搅,给脂质均匀分散的时间。4)放大生产的坑:小样在烧杯里90℃很容易全溶,几百公斤的乳化锅内部温差大,靠近罐壁先冷的区域会先结晶。必须看锅内实测温度而不是夹套温度,并相应延长保温时间。5)添加量极低,直接称量的相对误差很大,建议先做1:10或1:100的脂质母液再投,不要在500公斤锅里直接称几十克。6)成品放行检验必须加一项低温循环后的目视白点检查,不能只做高温加速。

What it addresses

皮肤角质层细胞间脂质的主要结构类型之一,在配方中作为屏障类脂质补充使用,常与胆固醇、脂肪酸组成类皮脂的脂质配伍。添加量通常在千分之几的量级,对成品性状影响很小,但溶解难度在整个原料库里排前列。这条原料的全部工程难点都在物理形态:能不能真正溶开、以及冷却后会不会重新析出。

Market direction

中国 / CN
在中国按常规化妆品原料使用,注意所采购规格的INCI名与目录收录名称需逐字核对;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(合成或发酵)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,屏障类宣称需控制在化妆品范畴内;以最新官方文本为准。
亚太 / APAC
日韩市场使用普遍,东南亚部分市场需确认原料来源声明,须逐一复核;以最新官方文本为准。

Status by market inventory (exact INCI match)

中国 · Inventory of Existing Cosmetic Ingredients in China (2021)
Not listed
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 (92555) · 功能 HAIR CONDITIONING, SKIN CONDITIONING - MISCELLANEOUS
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
神经酰胺3,神经酰胺III,N-硬脂酰基植物鞘氨醇,Ceramide 3,Ceramide NP
CAS
100403-19-8(待与供应商COA核对;不同酰基碳链规格登记号不同)
Suits formats
Cream · Lotion · Balm · Essence · serum(需增溶或脂质体规格)
Halal and vegan
当前主流为合成或发酵来源,可做vegan,但必须取得供应商关于非动物来源的书面确认(历史上存在动物来源规格);清真需供应商出具证明。
Cost band
Premium
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.