Aminoplast microcapsules comprising a core of fragrance and a shell of aminoplast polymer, the composition of the shell being from 75-100% of a thermoset resin comprising 50-90% of a terpolymer and from 10-50% of a polymeric stabilizer; the terpolymer comprising: (a) from 20-60% of moieties derived from at least one polyamine; (b) from 3-50% of moieties derived from at least one polyol; and (c) from 20-70% of substituted methylene moieties, the microcapsules additionally optionally comprising up to 25% of a cationic polymer. The capsules are competitive with known aminoplast capsules and have the major advantage that they are formaldehyde-free.