Q: Look for a gentle body cleanser that's non-comedogenic. This means that the product won't clog your pores and cause acne like comedones, blackheads, whiteheads or pimples. You can use the same acne cleansers on your chest that are marketed for facial acne. Look for a product that contains benzoyl peroxide, salicylic acid or alpha hydroxy acids. These ingredients can help control acne by chemically peeling away dead and dying skin cells. Benzoyl peroxide also reduces acne-causing bacteria on your skin. Take a bath or a shower once a day using warm water. Hot water can strip your skin of moisture and cause irritation. Take a soft clean cloth and gently massage the cleanser onto your chest. Rinse the cleanser off and carefully towel dry your skin. Avoid scrubbing your skin since this can make acne worse. Take an extra shower if you've been sweating a lot. For example, take a shower after working out. Keeping your skin hydrated is an important step in preventing acne. Just splashing water on your chest is enough to keep the skin hydrated for a few hours. To keep your skin hydrated throughout the day, you need to apply a moisturizer. Gently rub a non-comedogenic moisturizer on your chest after washing. Keeping your skin hydrated by moisturizing has also been proven to reduce scarring. Exposure to sunlight and tanning beds will damage your skin over time which increases your risk for acne. Take steps to protect your skin by limiting your time in the sun, avoiding tanning beds, and covering up when you do go outside. You should also wear sunscreen that protects against UVA and UVB rays, even on cloudy days. Realize that some medications (including acne medications) can cause sensitivity to the sun and tanning beds. These medications include: antibiotics like ciprofloxacin, tetracycline, sulfamethoxazole and trimethoprim; antihistamines like diphenhydramine; cancer medications like 5-FU, vinblastine, dacarbazine; heart drugs like amiodorone, nifedipine, quinidine and ditiazem; Non-steroidal anti-inflammatory drugs like naproxen and the acne medications isotretinoin and acitretin. Cotton lets sweat evaporate more efficiently so it doesn't remain against your skin for an extended period of time, increasing your risk of acne. Try to wear cotton shirts and bras as much as possible. Studies have shown that the bacteria that grows on cotton clothing is different than the bacteria that grows on polyester clothing. The type of bacteria that grows on the cotton clothing is less likely to infect the skin and cause acne. You should also sleep on cotton sheets. This can greatly reduce your risk for body acne since your skin is coming into contact with the sheets for a long period of time every night. Make sure to wash your sheets and clothing regularly as well. Skincare products often contain alcohol since this can strip oil from the skin and make your skin feel tingly and clean. Unfortunately, alcohol in skincare products can dry out your skin and clog your pores. To protect your skin, choose alcohol-free products. You should also avoid touching your chest or picking, popping, or squeezing any pimples. This will prevent bacteria from transferring from your hands to your chest which can cause acne or flare-ups. Popping or picking at pimples can also lead to scarring.
A: Choose a skin cleanser. Wash your chest every day. Moisturize your chest. Use sun protection. Wear cotton clothing. Avoid drying out and damaging your skin.

Q: Mice can be prolific breeders, but they don't become sexually mature until they are six to eight weeks old. Don't expect them to mate before this time. Just feed your mice well and keep them comfortable until they are old enough to breed. Generally, putting one male with two females in a single cage will increase the chances of breeding. To prevent fighting, it's important that there's only one male in each cage. If you're not sure which mice are male, gently lift them up by the tail and look between their legs. The testes should be very visible on male mice. Most mice will not normally fight with others. However, some male mice might become hostile, especially if they sense females nearby that are ready to mate. More rarely, some females may become aggressive with each other. If you have any aggressive mice on your hands, isolate them. Gently grasp them by the tail and move them into another cage to live by themselves instead of attempting to use them for breeding. If mice are healthy and grouped properly, there's a good chance they will breed without any intervention. Female mice will enter estrus (be ready to breed) every three to four days, so things might happen quickly. If you are trying to breed quickly, you can rotate a couple of different females in each male mouse's cage every 1-2 weeks. This will likely increase the number of females that become pregnant. When mice have mated, there will be a "plug" visible on the rear of the female. This plug is actually hardened semen, and it should remain in place for about 12 hours after mating. Even if you see the plug, however, it does not guarantee that the mouse has conceived and is pregnant, only that it has mated with a male.
A:
Wait six to eight weeks before attempting to mate your mice. Decide which mice will be roommates. Isolate aggressive mice. Let the mice do their thing. Check if mating has occurred.