[header] How to treat a hydrofluoric acid burn [title] Recognize the effects of hydrofluoric acid. [step] Hydrofluoric acid (hf) contact with skin can cause severe chemical burns. Direct contact with hf can cause major damage to your skin tissue, as hf is a corrosive substance that burns. 
It can also penetrate the skin and cause even further damage under the skin. [substeps] This can be even worse, depending on the concentration of the acid and the length of exposure.