Applying pigments to gel polish enhances the color and adds a unique flair to your nails. To do this, first, ensure your nails are prepped and apply a base coat, curing it under a UV/LED lamp. Next, apply your chosen gel polish color and cure it, but leave the inhibition (tacky) layer. Gently dab or rub the pigment powder onto the tacky layer with a small brush or your fingertip, ensuring even coverage. Tap off any excess powder. Seal the pigment with a top coat and cure it. For more intensity, you can apply a second layer of pigment and top coat, repeating the process. Always exercise care with lamp curing times to avoid over or under-curing, which can affect the final result.

The difference between oil grades relates to their viscosity, which is a measure of the oil's resistance to flow. These grades are determined by the Society of Automotive Engineers (SAE) and are indicated by numbers like 5W-30. The first number followed by "W" (standing for "Winter") refers to the oil's flow at 0°F, with lower numbers indicating better flow in cold temperatures. The second number denotes the oil's viscosity at 212°F; a higher number means the oil is thicker and provides better lubrication at high temperatures. This system helps users select the right oil based on climate and engine requirements, ensuring proper lubrication, engine efficiency, and longevity. Synthetic oils may also have performance additives for better engine protection and longer oil life. Choosing the right oil grade is crucial for the health and efficiency of an engine.

Henna ink, used for temporary body art and hair dye, can be purchased from a variety of sources. Specialty stores focusing on natural products or Indian, Middle Eastern, and African cultural goods often stock henna. Online marketplaces like Amazon, eBay, and Etsy are also popular destinations for purchasing henna in various forms, including ready-to-use paste and powder that you mix yourself. Be sure to select a product that's labeled as pure henna (Lawsonia inermis) and free from harmful additives like PPD (para-phenylenediamine), which is sometimes added to 'black henna' and can cause allergic reactions. Health food stores and some pharmacies may also offer henna products. It's important to research the brand to ensure it is safe and of high quality.