From the moment conception occurs, your baby undergoes fascinating changes. Understanding when and how your little one’s skin, hair, and nails develop can be exciting for expecting parents.
When Do Babies Grow Hair?
Around weeks 14 to 15 of pregnancy, tiny baby hairs, often referred to as lanugo, begin to emerge just under the skin at a slight angle. This marks the beginning of your baby’s hairline. By week 22, you may also notice the development of eyelashes and eyebrows, adding to your baby’s adorable features.
Throughout the pregnancy, your baby’s hair will change in texture and color, which can be influenced by genetics. It’s common for babies to be born with fine, light-colored hair that may later darken or change as they grow.
What is Lanugo?
Lanugo is the soft, fine hair that covers your baby’s body during the later stages of pregnancy. This hair helps to regulate your baby’s temperature and will typically shed shortly before or after birth.
When Do Babies Develop Skin?
The skin of your baby starts to form in the early weeks of pregnancy through the ectoderm layer. Initially, it is thin and translucent, but it thickens as your baby grows. You may also hear of vernix caseosa, a protective coating that forms on your baby’s skin, which helps to keep it moisturized and shielded during the time spent in the womb.
What About Fingernails and Toenails?
Fingernails and toenails begin to appear around week 20 of pregnancy. They will continue to grow and develop after birth, with many parents noticing their baby’s nails needing a trim shortly after coming home from the hospital.
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In summary, your baby’s hair, skin, and nails begin developing early in pregnancy, with significant changes occurring throughout the months. Lanugo and vernix caseosa play crucial roles in protecting your baby, while hair color and texture can evolve after birth.