Are Babies Born with Eyelashes? Genetic Factors and Eyelash Development Explained

Ever wondered if babies are born with those tiny, fluttery eyelashes? It’s a question that often pops up, especially among new parents marveling at their newborn’s every feature. Eyelashes aren’t just for aesthetics; they play a crucial role in protecting our eyes from dust and debris.

In this article, I’ll dive into the fascinating world of infant development and explore when and how eyelashes make their first appearance. Whether you’re a curious parent or just love learning about human biology, you’re in for an enlightening read.

Key Takeaways

  • Babies are born with eyelashes, which start developing around the 22nd week of gestation and are usually visible by the third trimester.
  • Genetics play a significant role in eyelash development in infants, influencing traits such as length, density, and color. Specific genes like FOXL2 are key factors.
  • Newborns’ eyelashes are shorter and finer compared to adults, continuing to develop postnatally, and serve the critical function of protecting the eyes from particles and light.
  • Environmental factors like maternal nutrition during pregnancy can impact the health and development of a baby’s eyelashes, with nutrient-rich diets promoting healthier hair follicles.
  • Common myths about eyelash growth stimulants for babies are unfounded; such products can potentially harm infants, and natural growth processes should be trusted.
  • Eyelash traits can vary with ethnicity, reflecting genetic diversity. Parents should understand these differences are normal and not a cause for concern.

Understanding Eyelash Development

Genetic Factors Influencing Eyelashes

Eyelash growth is primarily influenced by genetics. Specific genes determine the length, color, and density of eyelashes. Studies from institutions like the National Human Genome Research Institute show that variations in these genes lead to differences in eyelash traits among individuals. For instance, the FOXL2 gene plays a significant role in eyelash development and hair follicle regulation. When genetic mutations occur, they can result in conditions like trichomegaly (excessive eyelash growth) or Madarosis (eyelash loss).

Prenatal Development of Eyelashes

Eyelashes begin their development during the prenatal stage. Around the 22nd week of gestation, hair follicles start forming on the eyelids, indicating the initial phase of eyelash growth. By the third trimester, most babies have visible eyelashes. Researchers from the American Academy of Ophthalmology indicate that these early eyelashes are shorter and thinner than those in adults but serve the same protective function, shielding the eyes from particles and light. This early development ensures that newborns have a basic defense mechanism for their eyes immediately after birth.

The Science Behind Newborn Features

Why Do Some Babies Have More Eyelashes?

Genetics play a significant role in the number and density of a baby’s eyelashes. Specific genes inherited from parents influence these traits. Variations in these genes cause some babies to be born with more eyelashes. For example, a genetic predisposition to trichomegaly, a condition associated with excessive eyelash growth, may result in thicker lashes at birth. Environmental factors, like maternal nutrition during pregnancy, can also impact the development and health of eyelashes in newborns. Nutrient-rich diets contribute to healthier hair follicles, indirectly promoting eyelash development.

Comparing Eyelash Growth in Infants and Adults

Eyelash growth in infants differs significantly from that in adults. Infants are born with shorter, finer eyelashes. By birth, the hair follicles have formed, usually around the 22nd week of gestation, but the eyelashes continue developing postnatally. In adults, eyelash growth follows a regular cycle of growth (anagen), cessation (catagen), and shedding (telogen). This cycle is more pronounced, resulting in longer and thicker lashes over time. Hormonal changes during puberty further accelerate growth, contributing to the noticeable difference between infant and adult eyelashes.

Addressing Common Myths About Baby Eyelashes

Myth vs. Fact: Eyelash Growth Stimulants for Babies

Some believe that applying eyelash growth stimulants to babies will enhance their eyelash length and thickness. However, this is a misconception. Babies’ eyelashes are naturally developing, and external stimulants are unnecessary and potentially harmful. According to the American Academy of Pediatrics, using cosmetic products on infants can introduce allergens and irritants, risking adverse effects on their delicate skin and eyes. There is no scientific evidence supporting the idea that such products accelerate eyelash growth in infants.

The Impact of Ethnicity on Eyelash Appearance

Eyelash appearance in babies can vary based on genetic factors related to ethnicity. For instance, research from the Journal of Human Genetics indicates that babies of East Asian descent often have shorter, straighter eyelashes compared to those of Mediterranean descent, who may have longer, thicker lashes. These variations are due to inherited genetic characteristics governing hair type and growth patterns. Parents should understand that these differences are normal and reflect the diverse beauty of human genetics.

Practical Tips for Parents

Safeguarding Your Baby’s Eyes and Eyelashes

Protecting your baby’s eyes and eyelashes involves specific care routines. Cleanse their eyes daily using a soft, damp cloth. Avoid using harsh soaps or chemicals near their eyes to prevent irritation. Trim their nails regularly to prevent them from scratching their eyes accidentally.

Monitor their environment to reduce exposure to dust, pet dander, and other allergens. These can irritate their eyes and affect eyelash growth. When outdoors, use a stroller shade or a baby hat to shield their eyes from the sun’s UV rays. If your baby shows signs of eye discomfort or excessive tearing, seek guidance from a pediatrician.

When to Consult a Pediatrician About Eyelash Concerns

Consult a pediatrician if your baby exhibits any abnormalities related to their eyelashes. Signs include redness, swelling, or unusual hair loss around their eyes. Symptoms like persistent eye discharge or excessive crusting warrant medical attention to rule out infections or underlying conditions.

Seek advice if you notice that eyelashes aren’t growing or are sparse compared to other facial hair. Pediatricians can assess and determine if genetic factors or other health issues are involved. Regular check-ups ensure your baby’s eyelash development stays on track.


Understanding the complexities of eyelash development in babies can help parents make informed decisions. From the role of genetics to the influence of ethnicity, there’s a lot to consider. It’s crucial to focus on gentle care routines and to be aware of any signs of abnormal growth or discomfort. Regular pediatric check-ups ensure that any potential issues are addressed promptly. By staying informed and attentive, parents can support their baby’s healthy eyelash development effectively.

Babies are typically born with eyelashes, although they may be very fine and light at birth, becoming more prominent over the first few months. The growth and thickness of eyelashes can be influenced by genetic factors, similar to other aspects of hair development discussed by Healthline. Understanding these genetic influences can provide insight into the variability of eyelash appearance among infants, as explained by Verywell Family.

Frequently Asked Questions

What genes are responsible for eyelash development?

The genes FOXL2 and others studied by the National Human Genome Research Institute play a significant role in eyelash development.

What conditions can result from gene mutations affecting eyelashes?

Conditions like trichomegaly (abnormally long eyelashes) and Madarosis (loss of eyelashes) can result from gene mutations.

When do eyelashes start to develop in babies?

Eyelashes begin to develop in the prenatal stage, typically around the 7th to 8th week of gestation.

How do newborn eyelash growth and adult eyelash growth differ?

Newborns have shorter, finer eyelashes with a different growth cycle compared to adults, whose eyelashes are longer and thicker.

Are eyelash growth stimulants safe for babies?

No, using eyelash growth stimulants on babies is not recommended and can be harmful.

Does ethnicity impact the appearance of a baby’s eyelashes?

Yes, research indicates that there are variations in eyelash appearance among babies of different ethnic descents.

What are some tips for parents to protect their baby’s eyes and eyelashes?

Parents should practice gentle cleansing, monitor the environment for irritants, and seek pediatric advice for abnormal eyelash growth or eye discomfort.

When should parents consult a pediatrician about their baby’s eyelashes?

Parents should consult a pediatrician if they notice any abnormal eyelash growth, loss of eyelashes, or signs of eye discomfort in their baby.

How important are regular check-ups for healthy eyelash development?

Regular check-ups are crucial to ensure the healthy development of eyelashes and to address any potential issues early on.