All oils contain fatty acids and it is the fatty acid that has an effect on the comedogenicity level of oils. Some oils are much more likely to cause comedones than others. So this is the number you need to check to know how "good" and oil is for your skin.
Comedogenic means "likely to cause comedones". Non-comedogenic means "unlikely to cause comedones".
A comedone is a plug of debris that fills a skin pore. Comedones commonly appear as blackheads (sometimes whiteheads). This debris is a combination of bacteria, oil, dead skin cells, and even skin care ingredients. These
comedones trap the body oil that normally flows out of pores, which cleanses the skin and keeps its balance. A pimple will usually develop around the trapped oil that is being blocked by the debris.
Linoleic acid is a great fatty acid for the skin that does not clog the pores, and it actually helps to reduce the inflammation that surrounds clogged pores. Safflower oil (the high-linoleic acid kind) is, obviously, high in linoleic acid, therefore, good for the skin. The other kind of safflower oil though is not as good for the skin because of its oleic acid content. Oleic acid is likely to cause clogged pores, therefore the topical use of oils that have a high percentage of oleic acid should be avoided, unless you have dry skin.
Each oil, and most ingredients found in skin care products, are assigned a comedogenic number that reflects their pore clogging likeyness. While some charts differ on the numbers, I have found that most agree with this chart
http://www.beneficialbotanicals.com/fac ... ating.html , so it is the one I refer to the most.
I have never found lard on any chart I have seen, but if one were to look at each ingredient, I am sure you could figure it out. Hydrogenated Vegetable oil is a #3 on lists, so I would imagine that lard would at least be that.
There is also a "likely to cause irritation" number assigned to oils and ingredients, so a 5/5 would be highly comedogenic and very irritating. Most oils fall in the 0 range for irritation though, and only a few are a #1 or #2 (for example, wheat germ is a #2 on irritation levels). The hydrogenated vegetable oil is a #1 on the irritation likeliness scale, so I highly doubt that lard is more than that.