Self-adhesive stamp

A self-adhesive stamp is a postage stamp with a pressure-sensitive adhesive that does not require moistening in order to adhere to paper. They are usually issued on a removable backing paper.

Stamp collectors have criticized the format, because the rubber-based adhesive used tends to yellow the stamps progressively. It makes stamps difficult to remove from covers, however various household solvents can be used to separate used self-adhesive stamps from their envelopes.

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