Hot-melt pressure-sensitive adhesive (HMPSA) composition is disclosed comprising: a) 25 to 50% of a blend of SBS and SB styrene block copolymers; b) 45 to 75% of compatible tackifying resins having a softening temperature of between 80 to 150° C.; and c) 0.5 to 5.5% of fatty acids, the hydrocarbon chain of which comprises 10 to 22 carbon atoms. Also disclosed are a multilayer system comprising an HMPSA layer, a printable support layer and an adjacent protective layer. A self-adhesive label and process for recycling a labeled article with debonding of said label by immersing the article in a hot basic aqueous solution are also disclosed.