'non-blistering' is formed by the prefix 'non-' (from Latin 'non', meaning 'not') combined with 'blistering', the present-participle/adjectival form of 'blister'.

'blister' comes into English via Middle English (e.g. 'blister, blistre'), influenced by Old French/Medieval Latin forms (such as Old French 'bliste' or Late Latin 'blistera'), and the modern adjective 'blistering' developed from the verb 'blister' + the suffix '-ing'; the compound 'non-blistering' is a modern negated formation using the productive prefix 'non-'.

Originally 'blister' denoted a swelling or bubble (a small raised area), and over time it came to mean specifically a fluid-filled lesion on the skin; 'non-blistering' therefore denotes the absence of such lesions.