I remember in my young, free and single days, when I worked in London, shopped in LK Bennett, that sort of thing, spending about £12 on a tiny (really tiny) tube of what SpaceNK called something like 'Miracle Rescue Balm' which was supposed to work on lips, elbows and nipples (though I had no idea why you'd want to put it on your nipples at the time, apart from possibly something sh*g-related). Looking at the ingredients list it was 100% Lanolin. Friend of mine that had just had her second baby took one look and said 'You can get a giant pot of that from Boots for about a fiver, it's stuff you use for your nipples when you're breastfeeding.' And no doubt rolled her eyes at me at the same time ...
My point being, Fatima, that anything Lanolin based will do your lips no end of good, and is even sold as miracle rescue balm in Space NK! But I'd buy it from Boots if I were you, as I should have done in the first place. 