IBB offers the most diverse, comprehensive coverage of the biotechnology space in the US biotech segment. It tracks a straightforward, market-cap-weighted index consisting of roughly 150. NASDAQ-listed biotech companies.IBB is the largest and most popular fund in the segment, with a staggering $8B+ in AUM.ne downside to IBB is that because it tracks a NASDAQ-listed index, the fund can only hold companies traded on NASDAQ. While most US biotech companies trade on NASDAQ, IBB misses out on current and future biotechnology companies traded on the NYSE, which several of the other biotech funds are eligible to hold.
1 Olive Oil Best for: Very dry skin What it is: Olive oil â particularly extra-virgin olive oil â is a good all-around natural moisturizer and is recommended for dehydrated skin.afflower Oil. Best for: Dry, irritated skin. What it is: The oil of this thistle-like flower contains linoleic acid, or omega-6 fatty acid, which helps your skin make ceramides, a type of lipid that helps the skin hold onto water and prevent dehydration.
Oils that contain at least 50% of polyunsaturated acids get absorbed very fast. They are good for oily skin, feel light, are good as daytime moisturisers, and can even be worn under makeup. For example flaxseed oil, wild rose oil, wheat germ oil, borage oil, hemp oil, grape seed oil, walnut oil. Oils that have between 20% and 50% are called partially absorbing, and are good for normal and mixed skin. Examples are sunflower oil, soya oil, argan oil, sesame oil, plum seed oil. Oils that have less than 20% of polyunsaturated acids take a long time to get absorbed, and are recommended for dry and mature skin, that doesn't tend towards blocked pores.