A solid laundry detergent composition comprises: (a) from 80wt% to 99.9wt% first particle comprising: (i) from 20wt% to 39wt% detersive surfactant; (ii) from 10wt% to 40wt% inorganic salts selected from sodium carbonate, sodium sesquicarbonate, sodium bicarbonate and any mixtures thereof; and (iii) optionally, from 10wt% to 40wt% citric acid and/or salts thereof, (b) from 0.1wt% to 20wt% second particle comprising: (i) from 0.001wt% to 25wt% perfume; and (ii) from 34wt% to 99.999wt% carrier material, wherein the first particle in the form of a coated laundry detergent particle that is curved and the second particle in the form of a perfume laundry detergent particle both have perpendicular dimensions x, y and z, wherein x is from 0.5mm to 2.0mm, y is from 2.0mm to 8.0mm, and z is from 2.0mm to 8.0mm, optionally, wherein at 1wt% dilution in de-ionised water at 20℃, the composition has a pH in the range of from 7.6 to 10.0 and a reserve alkalinity to pH 7.5 of greater than 3.0.