If you are an oily or dry skin type, have acne prone skin, are experiencing pre-mature aging or have been diagnosed with eczema or psoriasis COCONUT OIL IS NOT YOUR PAL.
Coconut oil is bad for acne?
Unfortunately along with all the delightful aspects of coconut oil come's the inevitable downside. Coconut oil has traditionally been given a comedogenicity rating of 4 on a scale of 0 to 5 with 5 being the highest. Comedogenic means pore-clogging and likely to cause acne comedones, AKA your common unwarrented out-picturing of skin cell unhappiness better known as a pimple.
This makes coconut oil a very unhealthy choice for acne and OILY skin types. The lauric acid content fights bacteria which causes acne, but the total oil may clog pores depending on the user. The only way to know how it would affect you is to try it, and some people whose acne is under control aren't willing to play that kind of roulette with the tender harmony they may have achieved.
*Some people may even experience breakouts from using coconut oil in their diets.
Coconut oil dries the skin out?
Yep! Coconut oil can cause extreme dry skin. It seems counterintuitive because its an oil, however not all oils are created equal. The absorption rate of coconut oil is rapid. Applying it leaves the barrier of the skin vulnerable to dehydration from evaporation (check out skin evaporation here). Basically your skin experiences evaporation like every other substance containing water and without a barrier such as this one to protect it, it will be dry and/or dehydrated.
*Dehydration may cause breakouts as well
With oil and faces, the right amount of the right type is like the heavens open up and angels sing - Such as this PORE GENIE IN A BOTTLE! But the wrong one for your skin type can definitely throw things off.
COCONUT OIL HAS VERY LOW NUTRITIONAL VALUE FOR SKIN?
Coconut oil also has basically no vitamin or mineral content. It is basically rich faits in a jar. I've seen blog posts claiming it has "high Vitamin E content" but that claim is not substantiated. It may be they were confused by the stability of coconut oil, as many oils have longer shelf lives because of Vitamin E. Coconut oil is stable because of the rich saturated bonds it contains. Other oils also have compounds known as phytosterols which help the skin with water retention and barrier recovery (the opposite of what coconut oil provides)
COCONUT OIL IS AN ALLERGEN FOR SOME PEOPLE?
Coconut is also an allergen for some people who have tree nut allergy problems. Not all people who are allergic to tree nuts are allergic to coconut, and coconut is technically classified as a fruit. This still doesn't stop some people from having reactions. As a disclaimer to this point it is possible to be allergic to practically anything, but I suspect that some breakouts related to coconut may actually be an inflammation issue and not just from pore-clogging.
In conclusion...seek the help of an expert before indulging in cheap and frilly DIY treatments for your skin's health.