Baby's nails grow fast and because they are constantly touching the world around them, including themselves. Many babies like to have their hands at their face, especially when sleeping and unsightly scratch marks are usually a result of logn nails.
It can be scary cutting your baby's nails for the first time as their fingers and nails are very small. Using a clipper to trim the nails is not recommended for the first time, as it's better to use a soft cardboard nail file. It may be easier to cut when your baby is sleeping.
To prevent the skin from snapping with the nail, hold the finger and push the finger tip off the nail while cutting. Never cut it too short.
Do not panic if you notice that the tip of your baby's finger bleed's a little. It happens to all parents now and then. If this happens, press it firmly (but not too hard) with sterile gauze.
Baby nails grow quickly, so it is sometimes necessary to cut them twice a week. It's important to keep the nails short, your baby can hurt himself if he scratches his face and can give you a nasty slice, too.
If you notice that the skin around the nails is red, inflamed or hard, contact your doctor or consultant.
From angelababy In Q&A