Japan-List of Preservatives Allowed in Cosmetic Products

This list specifies preservatives allowed to use in cosmetics in Japan which includes 48 preservatives, each accompanied by detailed information such as the Ingredient Name, INCI Name, CAS Number, Maximum Concentration in Ready-for-Use Preparations, etc.

Entries: 72

Items: 72

Last update: Oct 20, 2025

No.

Ingredient name

INCI name

CAS number

Details

1

Benzoic acid

Benzoic Acid

65-85-0

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10

Dehydroacetic acid and dehydroacetate

Sodium Dehydroacetate

4418-26-2

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10

Dehydroacetic acid and dehydroacetate

Dehydroacetic Acid

520-45-6,771-03-9,16807-48-0

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11

Trichlorohydroxydiphenylether (Triclosan)

Triclosan

3380-34-5

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12

p-Oxybenzoic acid esters and their sodium salts

Sodium Isobutylparaben

84930-15-4

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12

p-Oxybenzoic acid esters and their sodium salts

Sodium Ethylparaben

35285-68-8

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12

p-Oxybenzoic acid esters and their sodium salts

Sodium Butylparaben

36457-20-2

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12

p-Oxybenzoic acid esters and their sodium salts

Sodium Propylparaben

35285-69-9

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12

p-Oxybenzoic acid esters and their sodium salts

Sodium Methylparaben

5026-62-0

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12

p-Oxybenzoic acid esters and their sodium salts

Isopropylparaben

4191-73-5

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