John Su the Science Guy

This category contains 18 posts

How the Advocates and Proponents of Tanning Beds Use Science to Trick

A few days ago, I asked if you guys wanted to see HOW this article on Erythema vs. Sunburning–an article written by a major supplier of tanning beds, manipulated science in an attempt to show that tanning beds do no harm, and may even be beneficial. While the overall response was rather one-sided, I figured it’d still be a … Continue reading

How Much Exactly Is 2.0 mg/cm^2—The Amount of Sunscreen Necessary to Achieve the Labeled SPF Rating?

So how much does 2.0 mg/cm^2 actually convert to? Find out in my final post for FutureDerm! http://www.futurederm.com/2013/04/26/how-much-exactly-is-2-0-mgcm2-the-amount-of-sunscreen-necessary-to-achieve-the-labeled-spf-rating/

The Meaning of SPF and How Antioxidants and Anti-Inflammatories Can Skew, Exaggerate, and Mask Those Ratings

Have you ever wondered how many sunscreens have insanely high SPF ratings, but don’t actually contain the necessary amounts of the various UV filters to achieve such a rating? Well, I definitely have. And more often then not, the questionable SPF ratings occur with sunscreens that utilize inorganic UV filters such as titanium dioxide (TiO2) and zinc oxide (ZnO). While I’ve certainly … Continue reading

The Fallacies of Comparative Studies

Think salicylic acid will deal with your acne as well as tretinoin? What about kojic acid versus hydroquinone? Before comparing two ingredients, keep these two lessons in mind: http://www.futurederm.com/2013/04/08/the-fallacies-of-comparative-studies/

Should L-Ascorbic Acid and Glycolic Acid Be Used Together?

A while back, several readers brought this article to my attention. In it, the author Dr. Cynthia Bailey states that, “… vitamin C and glycolic acid can’t both be on the skin at the same time anyway.” The readers wanted to know if there was any truth to this statement. Is There Any Evidence of a … Continue reading

A Natural Way to Treat Cold Sores

No one likes cold sores, but when they come around, you’ve got to treat them. In fact, it may be even better to use something on a long-term basis if you’re prone to eruptions. Find out what this “something” is here. http://www.futurederm.com/2013/02/14/a-natural-way-to-treat-cold-sores/

Should Niacinamide and Acidic Ingredients Be Used Together?

Here’s something else about the anti-aging superstar niacinamide! Can you use it with ingredients like hydroxy acids? Find out! http://www.futurederm.com/2013/01/24/should-niacinamide-and-acidic-ingredients-be-used-together/ Let me know what you think. Thanks!

Are Gluten-Free Skin Care Products Necessary for Those with Celiac Disease?

Inspired by a lovely reader on here, here’s an interesting discussion about gluten-free skin care products! Are they worth the extra effort? Find out here: http://www.futurederm.com/2013/01/03/are-gluten-free-skin-care-products-necessary-for-those-with-celiac-disease/

Why Does It Take So Long to Treat Hyperpigmentation?

Here’s just a quick post on why patience is a virtue! 🙂 http://www.futurederm.com/2012/11/29/why-does-it-take-so-long-to-treat-hyperpigmentation/

Part III: Retinol Metabolism Cont’d; Why Retinol Can Never Replace Tretinoin

In Part I, we discussed an overview of retinol metabolism in the skin. It delved into the actual steps and corresponding classes of enzymes responsible for the conversion process. Part II examined and analyzed the various issues about retinol use such as: retinol strength, and concomitant use with acidic products. In this final part, we will discuss whether or not retinol can … Continue reading

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