Q: Avoid spraying down your wok with nonstick cooking spray before you begin. The oils in the spray will build up over time and form a sticky oily layer in your wok. Instead, add just a little oil to the pan before you begin cooking your food. If your wok has a sticky layer from oil buildup, soak the wok in hot soapy water and scrub until the layer is removed. This may take multiple washes and rinses. You should avoid using metal utensils in your wok regardless of whether or not you're using a nonstick or uncoated wok. Metal spoons, tongs, or ladles can scrape the bottom and sides of the wok, scratching the nonstick surface or protective coating you've built up. Choose wooden or bamboo utensils for cooking with your wok. If your nonstick wok has stains that you can't simply wash away, apply a lightening paste. Combine 2 tablespoons of baking soda with 2 tablespoons of water. Apply the paste to the stain while the wok is slightly warm. Let the paste sit for 1 hour. Wash the paste off with warm soapy water. Remember to dry your wok well after removing the stains and storing. You should always hand wash your wok right after you use it. This means you should transfer the food you've cooked onto serving plates and wash the wok. Never wash your wok in the dishwasher. The high heat of the dishwasher and the harsh detergent will ruin the nonstick coating or protective layer that you've built up. If you can't wash your wok right after using it, you should at least soak it while you eat your meal. This will make it easier to scrub up.
A: Use a little oil when cooking. Avoid cooking with metal utensils. Remove tough stains. Hand wash your wok.

Q: Skype lets you make international phone calls to landlines and cell phones with Skype credits. Choose the Dominican Republic from the dropdown menu, then enter the number you want to call. Check the rates to call the DR with Skype credits on Skype's website. You can purchase plans to call landlines, mobiles, or both. Skype also offers monthly plans that allow you to call anywhere in the world. You can also use the Skype mobile app or desktop app on your computer to call other Skype users for free. You just need to add them as contacts on your Skype account. Make free calls through the Viber app to other users who have Viber installed on their smartphones. Purchase Viber Out credits to make calls to landlines or mobile numbers in the Dominican Republic. Check the Viber website to see their rates for calls to the DR. You can either buy a credit package or calling plan for the best rates. Add the whole number, starting with "+1", of the person you want to reach in the DR as a contact in your smartphone. Open the WhatsApp application and search for the contact, then press call. This will only work to call other people who have WhatsApp downloaded to their smartphones. Luckily, most people all over the world are using WhatsApp these days, so you should be able to call almost anyone! Go to https://hangouts.google.com/webchat/start, open the Hangouts sidebar in Gmail, or use the mobile app. Search by name or email for the person you want to call and click on their name when it appears, then click call. You can also check the names of multiple people to start a group call. If you can't find the person you want to call, you can start a call, then click on "Add people" at the top to get a shareable link that you can send to anyone.
A: Use Skype to call a number in the DR at cheaper rates. Call the DR with Viber for an inexpensive or free option. Use WhatsApp to call other WhatsApp users in the DR for free. Use Google Hangouts as another option to make free calls.

Q: Hyperpigmentation can take a variety of forms and have a number of different potential causes. If you want to try and prevent it, it's important to have a clear understanding of the different ways it might appear to see for which form you are most at risk. Depending on what form of hyperpigmentation you are concerned about, you may not be able to do much to prevent it. The three main types are: Post-inflammatory hyperpigmentation Lentigines Melasma This type of hyperpigmentation can be caused by any inflammatory skin condition which involves the junction between epidermis and dermis. The epidermis is the outermost layer of skin and the dermis is the layer beneath that. The kind of inflammation or injury that can cause PIH includes acne, burns, and psoriasis. A professional skin treatment can also result in PIH. If PIH is a reaction to a specific inflammation or trauma it can resolve itself without treatment, but this can sometimes take months. It is possible that epidermal pigmentation can last for six months or a year. Dermal pigmentation can last for even longer, persisting for years. There are a wide variety of different instances of lentigines recorded in medicine. Some of these develop when you are very young and some as you get older. Solar lentigines are those which are most often caused by excessive exposure to the sun. Sometimes these are known as liver spots, and have been associated with aging. Although they do multiply and become more prominent with age, evidence has shown them to be much more prominent in older people who have had high exposure to UV light. Solar lentigines most frequently occur on the face and the back of the hands. There is no proven link between lentigines and melanoma (a serious form of skin cancer), but they are considered an independent risk factor for melanoma. One other common type of hyperpigmentation is known as melasma (sometimes referred to as chloasma). Unlike the PIH and lentigines, melasma is not caused by exposure to the sun or a trauma or inflammation experienced by the skin. Melasma is understood to result from hormonal fluctuations, most commonly during pregnancy. Melasma takes the appearance of dark brown, roughly symmetrical patches on the face, which have clear distinct edges. Melasma can be a side-effect of oral contraceptives for women. It is often aggravated by thyroid complaints. It is more prevalent and tends to persist for longer in people with darker skin, and is sometimes experienced by dark-skinned men. For women, melasma often fades slowly after pregnancy, when hormonal fluctuations desist; however, it may never completely disappear without treatment.
A:
Identify the different types. Understand post-inflammatory hyperpigmentation (PIH). Identify lentigines. Determine melasma hyperpigmentation.