Links to specific topics in this chapter: Ancient Sunrise® Henna for Hair: Foreword Henna is NOT black Mapping the use of ‘black henna’ temporary tattoos The epidemic of PPD sensitization and the urgency of using pure henna Stylists and PPD Sensitization ...
This review mainly aimed to introduce the findings of research projects comparing the responses of tropical and temperate indigenes to heat. From a questionnaire survey on thermal sensation and comfort of Indonesians and Japanese, we found that the therm
A good rule of thumb is that applying half of the recommended amount will give you around 1/3 to 1/2 of the labelled SPF. The proposed reasoning for why the Beer-Lambert law fails is because it assumes an even surface, when skin is actually uneven. The reason for the different ...
PPD 10 blocks about 90% of UVA rays, and is generally considered to be suitable for everyday use. For some reason PPD values are usually hidden away on the sides of packaging. PA PA is a similar concept to PPD, but rates sunscreens on their UVA protection with plus signs (+). It’s...
This review mainly aimed to introduce the findings of research projects comparing the responses of tropical and temperate indigenes to heat. From a questionnaire survey on thermal sensation and comfort of Indonesians and Japanese, we found that the therm
I always love hearing your skin stories Ariana Page Russell on March 3, 2016 at 12:00 pm Hi James, I think Isabel has a great point–seek other treatments before you give up! It’s taken me a long time to discover my triggers, and patience is definitely needed. Did you try ...
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Side effects may include digestion issues & sagging skin from rapid weight loss You will eventually regain weight if you do not stick to your new diet and exercise plan Complications First, weight loss surgery is almost never life-threatening. Unlike the horror stories you may have heard during...
P-Phenylenediamine (PPD) Used in permanent color, especially darker shades. It may also be contaminated with 4-ABP, a human carcinogen. According to the FDA, this is a skin allergen and irritant. In fact, the FDA does not allow its use on the skin in the form of black henna temporary...
Why is it not recommended to use black henna? Black henna is not a natural product. It is combined with paraphenylenediamine (PPD), which changes the color and causes it to react faster on the skin. PPD is a toxic substance that is commonly used in black hair dye, causing the dye to...