E270; Lactic Acid
(in 10,121 products)

Potential Risk Index®:

ISCE InhaleISCE SwallowISCE ContactISCE Environment
PRI Legend


1. Antioxidant - Reduces oxidation to prevent the formation of free radicals which may be harmful to health.
2. Exfoliant - Removes dead cells at the surface of the skin
3. Preservative - Prevents and inhibits the growth of unwanted microorganisms which may be harmful
Lactic acid is a normal intermediate in the fermentation (oxidation, metabolism) of sugaris, found primarily in sour milk products, such as koumiss, laban, yogurt, kefir, and some cottage cheeses. The casein in fermented milk is coagulated (curdled) by lactic acid. Lactic acid is also responsible for the sour flavor of sourdough bread. In beer brewing some styles of beer (sour beer) purposely contain lactic acid. Most commonly this is produced naturally by various strains of bacteria, which ferment sugars into acids.
Lactic acid is an ingredient in processed foods and is used as a decontaminant during meat processing. It is produced commercially by fermentation of carbohydrates such as glucose, sucrose, or lactose, or by chemical synthesis. Carbohydrate sources include corn, beets, and cane sugar. It has a E number 270.
It is approved to use as food additive in EU. In US, it is generally recognized as safe food substance.
Warning: Do not use in the presence of UV light (including sun exposure).
Scientific References:
Regulatory References:
1. CANADA INGREDIENT HOTLIST, List of Ingredients that are Restricted for Use in Cosmetic Products [2019]
- Alpha-hydroxy acids
2. Association of Southeast Asian Nations Annex III - Part 2, Allowed
- Glycolic and lactic acid, their common salts and simple esters
3. US FDA Food Additives Status List [2018]
- Lactic acid
4. EU Approved Food Additive [2018]
- E270
5. Japan’s List of Designated Food Additives under Article 10 of the Food Sanitation Act
- Lactic Acid
6. Canada List of Permitted Food Additives
- List 8 - Lactococcus lactis DSM 11037
7. Hong Kong Consumer Council
- Lactic Acid
8. US FDA Generally Recognized As Safe (GRAS) Food Substances (21 CFR 184) [2017]
- § 184.1061 - Lactic acid

Safety and Hazards (UN GHS):

1. Causes skin irritation (H315)
2. Causes serious eye damage (H318)

Potential Health Concerns For:

1. Acidosis (PubMed ID:18406487)
2. Acidosis, Lactic (PubMed ID:11356440)
3. Confusion (PubMed ID:11356440)
4. Depressive Disorder (PubMed ID:24008352)
5. Diabetes Mellitus, Type 2 (PubMed ID:27094034)
6. Eye Injuries (PubMed ID:33358762)
7. Infarction, Middle Cerebral Artery (PubMed ID:26079057)
8. Liver Failure, Acute (PubMed ID:16750869)
9. Muscular Diseases (PubMed ID:8147937)
10. Myocardial Ischemia (PubMed ID:3812268)
11. Neurotoxicity Syndromes (PubMed ID:12700465)
12. Pain (PubMed ID:24008352)
13. Panic Disorder (PubMed ID:3341469)
14. Peripheral Nervous System Diseases (PubMed ID:12700465)
15. Pruritus (PubMed ID:30851411)
16. Seizures (PubMed ID:10828528)
17. Urticaria (PubMed ID:9506221)

Potential Health Benefits For:

1. Anxiety Disorders (PubMed ID:29643356)
2. Drug-Related Side Effects and Adverse Reactions (PubMed ID:10078349)
3. Manganese Poisoning (PubMed ID:21940818)

User Comments:

Subtotal: $0.00 HKD