In one sentence, describe what the following article is about: Pour about 1  tsp (4.9 mL) of baby oil in the palm of your hand. Then, dip your fingers into the baby oil and rub it along your hairline and around your ears. The baby oil will create a slick surface for the hair dye and will deter it from fully soaking into your skin.  Just make sure not to get any of the baby oil in your hair; otherwise, the hair dye might not be able to penetrate the baby oil to reach your hair. Instead of baby oil, you can use petroleum jelly or coconut oil as well. Keep your skin naturally moisturized by refraining from showering or washing your face prior to dyeing your hair. The buildup of oils around your hairline will act as a barrier to the hair dye and keep it from soaking into your skin. Put on a thin, elastic headband before you begin. Keep the headband just beyond your hairline so it does not interfere with dyeing your hair.  Also, consider placing an old, thin towel around your neck to keep the dye from running down your neck behind your head. If you have a hairdresser’s cape, then put this on over the towel to protect your clothing from the dye as well.
Summary: Rub baby oil around your hairline and ears before you dye your hair. Avoid showering before dyeing your hair to build up natural oils. Wear a protective headband to keep the dye from dripping down your scalp.

When you’re towel drying your hair, it’s best to use a very soft towel or even an old t-shirt instead of a coarse, nubby towel. Using softer material will prevent your hair from getting tangled and damaged when you dry it.  When you use a soft towel, your hair cuticles lay flat, so they dry in nice, glossy waves or curls. When you use a coarse towel, they’re more likely to frizz. You can buy special towels made just for towel drying hair. Make certain that it is made with a soft material. Check for towels in beauty supply stores or online. Consider using towels made of microfiber.
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One-sentence summary -- Get a soft towel or t-shirt ready.

Q: Aquariums take a bit of maintenance to make sure all of your critters stay alive and well. About every 2 weeks, 10-15% of the water in the tank should be replaced with fresh water. If you are using tap water, let the water sit in an aerated bucket for about 24 hours to allow the chlorine to air out.  Check your local water source to determine if there are heavy metals in your water. Use filtered water if you are concerned about the quality of your tap water. A gravel vacuum is a handy tool to have to help control the algae in your aquarium. When you change out the water, vacuum the gravel at the same time to remove algae growth and any uneaten food that may have accumulated.  Clean the aquarium walls with filter floss or a magnetic tank scrubber to keep algae from accumulating on the glass. Add plants, snails, or daphnia to help control the growth. Count your fish at least once a week to determine if any have died. Smaller fish can decompose quickly and cause spikes in nitrite, ammonia, and nitrate levels. These can be harmful to the other fish in your tank. If you see a dead fish, remove it as soon as possible.  Use a test kit to check the levels of ammonia, nitrite, nitrate, and pH. Replace the water if the levels are too high. The ideal levels vary depending on the type of fish you have, but in general, the ammonia should be between 0.0 to 0.25 mg/L, the nitrite should be less than 0.5 mg/L, the nitrate level should be less than 40 mg/L, and the pH should stay around 6.
A: Change the water. Control algae growth. Remove dead fish promptly.

Problem: Article: Older incandescent light bulbs do not contain liquid mercury.  But, some newer energy-saving compact fluorescent light (CFL) bulbs do.  Check the packaging that the bulbs came in for warnings regarding their mercury content.  Energy-saving bulbs typically contain no more than 4 mg of mercury—just enough to cover the tip of a pen. Even if the CFL bulb contains mercury, it might be in gaseous rather than liquid form. LED bulbs don’t contain liquid mercury. Tilt switches (sometimes called “mercury switches”) were used in older appliances to transmit an on/off signal.  Appliances in the home that may contain mercury include chest freezers, televisions, thermostats, washing machines, space heaters, clothes dryers, and washing machines.  Contact the appliance manufacturer or check your user manual to confirm if a given appliance has mercury. Contact an appliance recycler or your local hazardous waste collection center for information regarding the best way to dispose of these appliances. You might be able to locate up to 3 grams of mercury in thermostats. Most normal batteries do not contain mercury.  However, the smaller “button cell” batteries that are used in watches, hearing aids, toys, pacemakers, and other devices still contain mercury.  If you can find a device containing these small batteries, you’ve probably found liquid mercury. Certain pharmaceutical products might contain liquid mercury.  Skin antiseptics, facial creams, contact lens solutions, and some vaccines could contain liquid mercury.  To confirm that your pharmaceutical products contain liquid mercury, check the ingredients label or contact the manufacturer. Clocks from the 1600s or before often used liquid mercury as a pendulum weight.  If you own such a clock, it probably contains liquid mercury.
Summary:
Identify compact fluorescent light bulbs. Locate mercury in tilt switches. Find mercury in small batteries. Search for mercury in pharmaceuticals. Check antique clocks.