Article: Choose a medium or large sauce pan to form the base of your double boiler. This should be relatively tall, especially if you'll be using the double boiler for a recipe with a long cooking time. This can be any heat-proof container that fits snugly over the sauce pan, so most of the steam is trapped between them. There should be at least 4 inches (10 cm) of space between the bases of the two containers, and preferably more.  Aluminum, copper, and (non-stainless) steel all conduct heat quickly. These will provide the shortest cooking time and prevent hot spots from forming.  Stainless steel, heat-proof glass, and ceramic are best if you are cooking acidic ingredients, since they are non-reactive. They conduct heat more slowly, so be sure to stir frequently to avoid hot spots. Glass also makes it easy to check on the water level. Set aside the smaller container now that you've confirmed it fits. Fill the larger pan with about 1–3 inches (2.5–7.5 cm) of water, but make sure there is plenty of space between the water and the smaller container. If the two pans fit tightly together and there is not enough space between them, the steam buildup could cause an explosion.  Although an explosion is very unlikely, the risk increases for recipes with long cooking times. For these recipes, use containers that do not fit perfectly together, so steam can escape through the gap between them. Lift the pan to allow steam to escape if it starts to rattle. The longer the cooking time your recipe calls for, the more water you'll need. Place the larger pot on the stove and heat until boiling. Reduce heat to medium-low until the water reaches a steady simmer. Leave the smaller pot on the counter while you wait for the water to boil. If you heat it along with the larger one, the hot surface could burn your ingredients when you add them. Place your ingredients in the smaller container, then place the container over the simmering pot. Cook as directed in your recipe. Stir the ingredients to ensure they heat evenly.  Despite the name, a double boiler should stay at a low simmer. Reduce heat if the water starts to boil, and add a little hot water if it starts to boil low. If the sauce starts to seize up or stick to the pan, just pick up the smaller container and whisk for a minute to reduce the temperature. Remember that there is trapped steam in the double boiler, and that the base of the small container is very hot. Use pot holders or oven mitts, and tilt the container toward you so steam escapes on the opposite side.
Question: What is a summary of what this article is about?
Place a sauce pan on the stove. Place a smaller pan or mixing bowl on top. Pour water into the large pan. Heat water to a simmer. Heat the ingredients in the smaller container. Remove the small container from the heat.

This method is great if you are transitioning from relaxed to natural hair as the curls will help conceal the difference between textures. It may also work on relaxed hair and micro box braids as well.  For best results, start with stretched hair, like what you’d from a braid-out. If you have long hair, part it into 4 sections first: 2 on the top and 2 on the bottom. Secure each section with a hair clip. Grab a 1 in (2.5 cm) section of hair from the top of your head. Apply just enough water to dampen it, but not so much to make it soaking wet. Smooth your hair down with a bristle brush.  Don’t get your hair wet if you are starting with micro or box braids. Instead, grab several braids and get ready for the next step. If you want tighter curls or ringlets, start with a 1⁄4 to 1⁄2 in (0.64 to 1.27 cm) section instead. Place the end of your hair section against the middle of a Flexi rod. Wrap your hair around the rod until you get to the roots, then fold the ends of the rod inward to secure it.  If you are curling braids, stop when you are halfway up your braid. Don’t go all the way to the roots.  If you want tighter curls or ringlets, use a straw or smaller flexi rod instead. Slide a bobby pin through the straw and hair to secure it. Flexi rods come in different sizes. The thicker the rod, the larger the curl will be. Work around your head, section by section. If you plan on finishing with large, chunky curls, try to keep each strand a consistent size. This is not as important if you plan on separating the curls out into smaller ones, however. Again, if you are curling braids, only curl them halfway up to the roots. If you have to run a few errands or go to sleep, wrap a silk scarf around your head. Not only will this hide the rods with style, but it will also keep them in place while you sleep or run about.  If you are in a hurry, you can speed the process up with a hood dryer or a hairdryer. Use a low-heat setting so as not to damage your hair. If you wrapped Flexi rods around braids, dip the wrapped braids into boiled water for 20 to 30 seconds first. Be careful not to burn yourself. Your hair must be completely dry before you take the rods out, otherwise the curls won’t stay set. If your hair feels damp, wait longer or dry it with a hairdryer.  Once you take the rods out, separate each curl into 2 or 3 individual curls with your fingers. This will give you voluminous hair with less frizz. If you want more volume, comb through your hair with your fingers or a wide-toothed comb. This is a great idea for relaxed hair; don’t do it with braided hair, however. In most cases, this style is not permanent. If you want the style to go away, simply wash your hair. If you want to keep it, you should still wash your hair as you normally would, then repeat the whole process.  If your hair is natural, the curls should maintain their shape until you wash them again. After that, you'll have to redefine them with flexi rods. If your hair is relaxed, the curls may start to lose their shape by the end of the day, just like naturally straight hair.  You'll have to repeat the process to get the curls back. If you have braids, the style will be permanent. To straighten your braids, simply dip them in boiled water again, then let them hang straight and loose until they dry.
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Start with dry, detangled hair. Mist a 1 in (2.5 cm) section of hair with water. Wrap the hair around a Flexi rod, then bend the ends inward. Repeat this process all over your head. Allow your hair to air-dry. Remove the rods once your hair is completely dry. Repeat the process the next time you wash your hair to maintain the style.