As for Diazolidinyl Urea itself, a study from 1990 writes that at concentrations up to 0.4%, it was a mild cumulative skin irritant, but the CIR (Cosmetic Ingredient Review) reviewed it in 2006 and found that, in concentrations of <0.5%, it is safe as used, as the amount of formaldehyde released will be smaller than the recommended limit (of less than 0.2%). The disadvantage of Titanium Dioxide is that it's not cosmetically elegant, meaning it's a white, "unspreadable" mess. Sunscreens containing Titanium Dioxideare often hard to spread on the skin and they leave a disturbing whitishtint. The cosmetic industry is, of course, really trying to solve this problemand the best solution so far is using nanoparticles. The itsy-bitsy Nano-sized particles improveboth spreadability and reduce the whitish tint a lot, but unfortunately, it also introduces new health concerns.

I've been using Sun Sense SPF 50, 500ml dispenser for several years. I have used it every day on the recommendation of my dermatologist to cover all exposed parts of my body due to having developed very sensitive skin and a melanoma in 2018.It gives very good protection acrossthe whole UVA range (310-400 nmthat is both UVA1 and UVA2) with a peak protection at 360 nm. The problem with it, though, is that it is not photostable and degrades in the sunlight. Wikipedia saysthat avobenzone loses 36% of its UV-absorptioncapacity after just one hour of sunlight (yep, this is one of the reasons why sunscreens have to be reapplied after a few hours). Effective from as low as 3% with even more benefits for dry skin at higher concentrations up to 20-40% The famous Avobenzone. It is a special snowflake as it is the only globally available chemical sunscreen agent that provides proper UVA protection (in the US, new generation sunscreen agents are not approved because of impossible FDA regulations). It is the global gold standard of UVA protection and is the most used UVA sunscreen in the world.

A chemical sunscreen agent that absorbs UVB and short UVA rays (280-350nm). It's a highly stable but weak UVB absorber, that's often used as a photostabilizer in non-sunscreen proudcts. Patients who receive SunSense SPF50+ products on prescription are advised to consult their doctor for a suitable replacement. Currently, the following Uvistatsunscreens are available on prescription to anyone who suffers from light sensitivity (including all lupus patients): In recent months, LUPUS UK has received a growing number of reports from lupus patients unable to obtain SunSense SPF50+ products via their NHS prescription. On Friday, 19th of August, it was confirmed that all SunSense SPF50+ products will be unavailable indefinitely. Fragrance free. Now with added Vitamin E and niacinamide, to help improve the appearance of skin texture and tone.Super common little helper ingredient thathelps products to remain nice and stable for a longer time. It does so by neutralizing the metal ions in the formula (that usually get into there from water) that would otherwise cause some not so nice changes.