Tonicity refers to the affect of a solution on a cell.
In the 4th and final post of the Spotlight on Sun Protection series, we’ll take a look at Australia, India and wrap up with some final thoughts on this series and manufacturing sunscreens. If you’ve just discovered the spotlight on sun protection series, you can click the links to take a look at part 1, where we covered sunscreen regulations in the USA, part 2: the EU and part 3: the Asian countries.
In just a few weeks, I’ll be traveling to Spain for the In-Cosmetics conference located in Barcelona on April 17-19. In-Cosmetics is the leading global business platform for personal care ingredients, and will be showcasing a diverse range of innovative ingredients and technologies in the cosmetics industry. Since Personal Care Truth focuses on educating our readers, I’ll be sharing what I learn at the conference through live posts on PCT during and after the conference.
Rats differ markedly from humans in many respects, making rat experiments difficult to extrapolate to humans.
What Doug Schoon thinks about the recent Hair Smoothing controversy.
Doug Schoon Responds to Misleading Claims by Oregon OSHA That “Methylene Glycol” Is a Synonym For “Formaldehyde”
Methylene Glycol and Formaldehyde are very different, both chemically and physically.
Understanding why plants contain essential oils is helpful to fully understand the amazing power of aromatherapy.
Plants smell for two main reasons, defense and attraction. The aromatic oils promote a plant’s growth, aid in reproduction by attracting insects, repelling predators and protecting them from disease.
Material Safety Data Sheets (or MSDS, for short) are very useful documents, or they are very misleading – it all depends on how you use them!
Even though we of course want to protect ourselves as much as possible from cancer, it is not correct to think that anything that is a carcinogen causes cancer.
Do we know what the cumulative effect of the chemicals used in cosmetics in the body is?