Magnesium Salicylate
AKA “18917-89-0, Magnesium salicylate anhydrous, Magnesium disalicylate, Backache relief, JQ69D454N1, DTXSID00889392, Backache Caplets, Bayer Select Backache, 41728CY7UX”
Preservative
Ingredient Facts
Magnesium salicylate
AKA: 18917-89-0, Magnesium salicylate anhydrous, Magnesium disalicylate, Backache relief, JQ69D454N1, DTXSID00889392, Backache Caplets, Bayer Select Backache, 41728CY7UX
Preservative · Preservative · EWG: 3
Synthetic
Preservative
Chemical Exfoliant
Not Clean
Magnesium salicylate is a non-steroidal anti-inflammatory drug (NSAID) used to treat mild to moderate pain. It is available in several over-the-counter (OTC) formulations. Though the recommended doseage is 1160 mg every six hours, per package directions of the Doan's OTC brand (580 mg magnesium salicylate tetrahydrate, equivalent to 934.4 mg anhydrous magnesium salicylate), effective pain relief is often found with a half dosage, with reduced anti-inflammatory results.
Formula
C14H10MgO6
Mol. Weight
298.53
CAS #
18917-89-0
Form
Powder
State
Solid
See origin →
Functions
Preservative
Keeps your product from growing bacteria, mold, or yeast. Without these, that jar of cream becomes a petri dish in about a week.
Quells irritation
Reduces redness
Reduces swelling
Traditional Use
A modern compound combining magnesium with salicylic acid, developed in the 20th century. Created to deliver salicylic acid's acne-fighting properties while reducing skin irritation in skincare products.
Skin Types
●all-skin-types
Best For
Acne
Pregnancy & Breastfeeding Safe
Caution
EWG
3
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Not an Irritant
medical-approval
all-shades-safe
Concentration Guide
0.5%
0%1%
Reg. Limit
EU regulatory limit: 0.5%. Not to be used for children under 3 years of age (2) Source: EU Cosmetics Regulation (EC) 1223/2009, Annex V (Preservatives), Entry 3.
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR