Yes, but initially to stop the cracking of the lips - lecithin should be applied. This would be an initial phase until the body is fully able to begin excreting phosphatidylcholine onto the lips && additionally, it would fuse with your existing bilayer anyway - in other words strengthening it.
I am supplementing lecithin (1 capsule, 1000mg) and phosphatidylcholine (2 - 4 capsules, 150mg) daily now.
Also those who experience fordyce spots may be required to paint/ apply lecithin in order to create the excitable bilayer lipid membrane (as their sebaceous pores are blocked from excreting the required lipids - another possible effect of a lack of dietary choline).