(Ibuprofen), Which Is A Type Of Medicine Called A Non-Steroidal Anti-Inflammatory Drug (NSAID). When You Apply Ibuprofen To The Skin, It Stops The Production Of Prostaglandins In The Underlying Tissues. This Reduces Inflammation / Swelling And Pain In The Local Area.

Ibuprofen Is Absorbed Into The Bloodstream Less When You Apply It To The Skin Than When You Take It By Mouth, Which Means Gels And Sprays Are Less Likely To Cause Side Effects Than Products You Take By Mouth. However, Absorption Can Still Occur, Particularly If You Use Large Amounts On Large Areas Of Skin.