The Sweet Kisses Ponies were released in the My Little Pony line in Year 10. The line included three ponies with lipstick that would appear with cold water and disappear with hot water (or a kiss from a human friend). They also had tinsel in their manes.
The Sweet Kisses ponies had the sleek and slender bodies of the Sweetheart Sister ponies but did not come with earrings.
Each Sweet Kisses pony came with a lipstick tube with a sponge so the hot and cold water could be applied to their lips.
A common problem for these ponies is that their lipstick fades over time or no longer changes color.