Titanium dioxide and zinc oxide. commonly found in a range of products such as sunscreens. are known for their ability to shield against harmful UV rays. Nevertheless. there is apprehension that the use of these nanoparticles may lead to skin penetration. Presently. both substances are deemed safe by the FDA. However. recent research has shown that titanium dioxide's photocatalytic nature can generate free radicals and induce oxidative stress. Hence. although generally considered safe. it is advised to wear protective clothing and seek shelter as the most efficient methods for safeguarding against sun damage.

Gluten is a group of proteins found in certain grains like wheat, barley, and rye, not in cellulose. Cellulose is a complex carbohydrate and the primary structural component of plants. It doesn't contain gluten because it doesn't have the protein composition found in grains that produce gluten. However, cross-contamination can occur if cellulose is processed or packaged in facilities that also handle gluten-containing grains. Therefore, while pure cellulose is gluten-free, individuals with celiac disease or gluten sensitivity should be cautious about the source of cellulose in their products to avoid inadvertent gluten exposure.

To remove epoxy from a porcelain sink, begin by applying a small amount of acetone or a commercial epoxy remover onto a clean cloth. Dab it onto the epoxy, ensuring not to over-saturate the area. Let it sit for a few minutes to soften the epoxy. Use a plastic scraper or an old credit card to gently scrape off the loosened epoxy. It's important to use a plastic tool to avoid scratching the porcelain. For stubborn residue, reapply the acetone and let it sit a bit longer before scraping again. After removal, wash the area with warm, soapy water to remove any chemical residue and rinse well. Always wear gloves and ensure good ventilation when working with chemicals like acetone.