这种成分是什么?

이 원료는 다음의 구조를 갖는 유기화합물이다.

使用时有什么注意事项吗?

아스코빅애씨드, 즉 비타민 C는 강력한 항산화제로, 피부 미백 및 콜라겐 생성 촉진에 도움을 줍니다. 광범위하게 사용됩니다. Vitamin C (ascorbic acid) protects the skin by neutralizing free radicals generated from UV exposure and pollution, preventing oxidative damage to skin cells, lipids, and proteins. It supports collagen biosynthesis by acting as a cofactor for enzymes prolyl and lysyl hydroxylase, which stabilize collagen's triple helix structure, thereby maintaining skin firmness and elasticity. Vitamin C inhibits tyrosinase, an enzyme critical to melanin production, helping to reduce hyperpigmentation and improve skin tone. It also enhances skin repair and healing by promoting collagen formation and bolstering immune response at wound sites. Though not a sunscreen, it provides photoprotective effects by reducing UV-induced inflammation and DNA damage. Vitamin C works synergistically with other antioxidants like Vitamin E and ferulic acid for enhanced skin protection and anti-aging benefits

成分列表

成分词典

ASCORBIC ACID

临床证据

色斑暗沉 B+
皱纹 B
紧致 C

研究所用浓度: 10–20%
使用时间: 早上
刺激性: 中等——先隔天使用

等级依据对该成分研究文献的核查，描述的是成分本身，而非所有含该成分产品的功效。

产品中实际含有多少

标示含量的产品 183 款中位数 0.0006%12% 达到研究所用浓度（10–20%）

低于 0.01% 138
0.01–0.1% 16
0.1–1% 1
1% 以上 28

标示含量的多为以该成分命名的产品，数值可能偏向象征性的少量添加。

含该成分的产品中，265 款将其列在 1% 线之前，639 款列在之后（通常不超过 1%）。

未标示含量的产品，若列在前面，约 51%、列在后面约 0% 的可能达到研究浓度。

按肌肤问题的临床证据等级

B: 一至两项随机试验
C: 无对照或复方产品研究

遇光和空气容易氧化。敏感肌可能有刺痛感。

参考文献 3 篇

含有此成分的产品

已确认 899 款中的 12 款 · 按含量充足程度排序 · 查看全部 899 款

化妆品中的作用

稳定 pHBUFFERING延缓产品因氧化变质ANTIOXIDANT登记为香料组成物质（并非表示其增香）FRAGRANCE保持肌肤良好状态（CosIng 泛分类）SKIN CONDITIONING

安全与法规参考

Other restriction: ban substances that deplete the ozone layer

来源: 欧盟 CosIng 成分清单

Reviewed by CIR: Extended Re-review Summary: Safety Assessment of Ascorbic Acid and Ascorbates as Used in Cosmetics

来源: 美国CIR 安全性评估

详细资料——标示名称、识别编号、物性、试验记录、文献

官方标示名称和定义

日本化妆品工业联合会标示名称アスコルビン酸: 本品は、ビタミンCであり、次の化学式で表される。

来源: 日本化妆品工业联合会标示名称

别名和识别信息

ASCORBIC ACIDINCI아스코빅애씨드韩国标示名称（食药处标准名）アスコルビン酸日本标示名称

CAS No.化学物质登记号: 50-81-7
CAS No.化学物质登记号: 50-81-7 / 62624-30-0
CAS No.化学物质登记号: 62624-30-0
EC No.欧盟化学品目录编号: 200-066-2
EC No.欧盟化学品目录编号: 200-066-2 / 263-644-3
EC No.欧盟化学品目录编号: 263-644-3

实测物性

性状: L-ascorbic acid is a white to very pale yellow crystalline powder with a pleasant sharp acidic taste. Almost odorless. (NTP, 1992) · Dry Powder, CBI
气味: Odorless
熔点: 374 to 378 °F (decomposes) (NTP, 1992) · 191 dec °C
溶解性: greater than or equal to 100 mg/mL at 73 °F (NTP, 1992) · 400000 mg/L (at 40 °C)
密度: 1.65 (NTP, 1992) - Denser than water, will sink · 1.65 g/cu cm at 25 °C
稳定性: Stable to air when dry, impure preparation and in many natural products vitamin oxidizes on exposure to air and light. Aqueous solutions are rapidly oxidized by air, accelerated by alkalies, iron, copper
pH: Between 2,4 and 2,8 (2 % aqueous solution) · pH = 3 (5 mg/mL), pH = 2 (50 mg/mL)
解离常数: 4.7 (at 10 °C) · pK1 = 4.17, pK2 = 11.57

这是对物质本身测得的数值，并非原料商品的规格。

来源: PubChem