Caleb Foster
A baby's fingernail and toenail beds begin to form at week 11 of pregnancy, with the nails themselves starting to grow at week 12. By week 20, the fingernails and toenails are clearly visible, and they will harden and thicken during the third trimester. However, they will still be quite soft and flexible at birth compared to older kids' nails. It is important to keep a newborn's nails short to prevent them from scratching their delicate skin.
| Characteristics | Values |
|---|---|
| When do fingernail beds begin to form? | Week 11 of pregnancy |
| When do toenails become visible? | Week 32 of pregnancy |
| When do fingernails reach the fingertips? | Week 34 of pregnancy |
| When do toenails reach the tips of the toes? | Week 38 of pregnancy |
| When do tiny nails sprout? | Second trimester |
| When can you see the fingernails and toenails clearly? | Week 20 |
| When do nails harden and thicken? | Third trimester |
| How much do nails grow each day? | 0.1 mm |
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What You'll Learn
Baby nail beds begin to form at week 11 of pregnancy
The development of the baby's nails is just one of the many fascinating changes that occur during pregnancy. In the early stages, the baby is formed of three distinct layers: the endoderm, mesoderm, and ectoderm, with the vast majority of skin, hair, and nails developing in the ectoderm.
As the pregnancy progresses, the baby's nails will continue to grow and develop. By week 20, the fingernails and toenails are clearly visible, and they have a soft and translucent appearance, similar to fetal skin. During the third trimester, the nails will harden and thicken, but they will still be relatively soft and flexible at birth when compared to older children's nails.
It is important to care for your baby's nails once they are born. As babies lack muscle control, they can easily scratch and cut their delicate skin with their nails. Keeping their nails trimmed and rounded is essential, and many parents find it helpful to do this while the baby is asleep, as their hands are less likely to move around.
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Nails start growing at week 12
A baby's fingernail and toenail beds begin to form at week 11 of pregnancy, with the nails themselves starting to grow at week 12. At this point, the nails are soft and translucent, similar in appearance to fetal skin. They will harden and thicken during the third trimester, but they will still be quite soft and flexible at birth compared to the nails of older children.
By the time a baby is born, their nails may already be quite long. It is important to keep their nails short as they can easily scratch and cut their delicate skin. Baby nail scissors, which have rounded tips for safety, or baby clippers can be used to trim their nails. It is recommended to keep the nail edges rounded instead of jagged. An emery board can also be used to file the nails down without the risk of nicking the baby.
Trimming a baby's nails can be unnerving, especially for new parents. Many parents find it easier to trim their baby's nails when they are asleep and their hands are less of a moving target. It may also be helpful to have one person hold the baby while the other person trims their nails.
Because babies' nails tend to grow quickly from infancy to toddlerhood, they may need to be trimmed as often as once or twice a week.
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Nails are visible at week 32
A baby's fingernail and toenail beds begin to form at week 11 of pregnancy, with the nails themselves starting to grow at week 12. By week 20, the fingernails and toenails are clearly visible, although they are soft and translucent, similar to fetal skin. During the third trimester, the nails will harden and thicken, but they will still be quite soft and flexible at birth compared to older kids' nails.
At 32 weeks into your pregnancy, your baby's toenails are visible. The soft, downy hair that has covered the baby's skin, called lanugo, starts to fall off. By this stage, the baby might be 11 inches (280 millimeters) long from crown to rump and weigh about 3 3/4 pounds (1,700 grams).
At 33 weeks into pregnancy, the baby's pupils can change size in response to light. The bones are hardening, but the skull is still flexible and soft. By 34 weeks, the fingernails have reached the fingertips. The baby might be nearly 12 inches (300 millimeters) long from crown to rump and weigh more than 4 1/2 pounds (2,100 grams).
By 35 weeks, the baby fills most of the space in the amniotic sac and has less room to move. By 37 weeks, the baby can grasp things firmly, and the head might start moving down into the pelvis. At 38 weeks, the toenails have reached the tips of the toes, and the baby might weigh about 6 1/2 pounds (2,900 grams).
Trimming a baby's nails can be unnerving, but keeping them short is important. Babies lack muscle control, so they can easily scratch and cut their delicate skin. Baby nail scissors with rounded tips or baby clippers are recommended. It is also important to keep the nail edges rounded instead of jagged, and some parents prefer to use an emery board to file the nails down.
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Nails harden and thicken in the third trimester
A baby's fingernail and toenail beds begin to form around week 11 of pregnancy, with the nails themselves starting to grow in the second trimester. At this point, they are soft and translucent, similar to fetal skin.
During the third trimester, the nails will harden and thicken. This is also when fetal skin starts to harden and become less transparent, and pigmentation begins to develop. However, a baby's nails will still be quite soft and flexible at birth compared to older kids' nails.
The changes in a baby's nails during pregnancy are mirrored by changes in the mother's nails. Pregnancy hormones can cause nails to grow more quickly than normal, but they can also make nails weaker and more brittle, causing splits and breaks. These changes can be mitigated by a healthy diet, which is key to supporting the baby's overall development. Biotin, a B-complex vitamin found in foods such as nuts, eggs, oatmeal, spinach, broccoli, bananas, and whole grains, can improve nail firmness, hardness, and thickness.
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Baby nails grow quickly and may need to be trimmed often
A baby's fingernail and toenail beds begin to form at week 11 of pregnancy, with the nails themselves starting to grow at week 12. By week 20, the fingernails and toenails are clearly visible, and they will harden and thicken during the third trimester. At birth, a baby's nails are still quite soft and flexible compared to the nails of older kids.
When trimming a baby's nails, it is recommended to cut them straight across and slightly rounded at the top. This technique will give the nails maximum strength. It is also important to keep the nails clean and dry. A fine-textured nail file can be used to smooth jagged edges and keep the nails shaped and free of snags.
To prevent biting or picking at nails, which can lead to infections, it is a good idea to moisturize a baby's nails and cuticles regularly. A little hand lotion or moisturizer will do the trick.
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Frequently asked questions
A baby's nail beds start to form around week 11 of pregnancy, with the nails themselves starting to grow around week 12. By 20 weeks, the fingernails and toenails are clearly visible, and they harden and thicken during the third trimester.
Because babies' nails grow quickly from infancy to toddlerhood, they may need to be trimmed once or twice a week.
Find a good position that allows easy access to your baby's hands and make sure you are in a well-lit area. Push down on the fingertip skin so you can get the clipper or scissors around both sides of the nail. Baby nail scissors, which have rounded tips for safety, or baby clippers are recommended. Keep the nail edges rounded instead of jagged.
