I have not use MAC products so I can't comment.
I have a good one from Dior- it's clear- leaves a nice shine and it's tingly too. It does seems to plump the lips quite well, temporarily anyway. It's called Lip Maximizer Collagen Activ . I like it a lot. It's like applying lip gloss I guess- it's in the same kind of tube.
Out of interest .....I found this website for men's grooming etc. They have this lip treatment - The AM & PM lip and mouth Repair Serum-Therapy contains Essence of menthol, Aloe & Gotu Kola extract, Cucumber pulp & Oil extract, Witch Hazel Oil and Botanical phyto-collagen. This highly concentrated serum replenishes loss of moisture in lip & mouth area by hydrating and plumping the dry crevasses caused by dryness.
www.kenmen.net - the picture of the lip treatment product above and the info is from the website . Hope I helped a little !