uv protection factor
uv protection extends the period the skin can protect itself by the respective given factor. for example, if your skin starts going red after 10 mins, with uv protection factor 8 you can stay in the sun for 80 minutes.
uv rays
we distinguish between 3 types of uv rays: uv a-rays, uv-B rays and uv-c rays. only the uva- and uvb-rays reach our skin because the uv-c rays are blocked out by the sky. although uva and uva will give you a healthy tan, skin damage may be caused as a result of excessive exposure and/or in the case of sensitive persons (see sun protection). too frequent sunbathing and sunburn increases the risk of contracting skin cancer in later life.
uv-filter
are not only used to protect the skin from the damaging effect of the uv rays but also to protect the products and ensure that their colours remain stable. example: the “benzophenone“ types. however, the usage concentration is only very slight.
UREA
see carbamide
beauty point by point
if you ever happen to want to know what 'acetone' is – then you are in just the right place with my beauty lexicon! scroll through to the letter you want (maybe as you scan the entries you will notice something else interesting?) - and if you can’t find the specific information you are looking for in the lexicon, simply email me! I will be constantly extending it and will be very glad of your help in doing so! If you want to know anything else about ingredients you will find valuable information at this site:
www.beauty-ratgeber.de/kosmetik/inci.htm (only available in german)