When do Babies grow Eyebrows and Eyelashes?
Many new parents do a little double-take when they first meet their baby: the tiny eyelashes, the almost-invisible eyebrows, the whole face you have been picturing for months. It is such a specific surprise, mama. We know.
The short version? Hair follicles for eyebrows and eyelashes form around 22 weeks in the womb, but that early hair is usually pale and unpigmented (StatPearls / NIH). Most babies show visible eyebrows and lashes by 2 to 3 months, with fuller growth by around 4 months.
This post walks through what is happening under that soft little forehead, why newborn eyebrows can look so faint, and what pediatric dermatologists actually recommend (and absolutely do not recommend) if you want to help things along.
In this guide, we cover:
- When eyebrow and eyelash follicles start forming
- Why newborn brows and lashes can look nearly invisible
- When your baby's brows should become clearly visible
- What cradle cap does to eyebrow hair and how to handle it
- What pediatric dermatology says about home remedies
- When to call your pediatrician
- Why baby eyebrow color can change again and again
- Whether it is safe to draw eyebrows on your baby
When does eyebrow and eyelash development actually begin?
Long before your baby meets you. Hair follicle formation, the whole blueprint for where hair will grow, starts in the womb. Eyebrow and eyelash follicles develop between 20 and 24 weeks of gestation as part of normal fetal skin and hair development (StatPearls / NIH).
The very first hair to grow is lanugo, a fine, soft, unpigmented body hair that covers the fetus from around 20 weeks on (StatPearls / NIH, Lanugo). Most of that lanugo is shed before birth, though preterm babies are often still wearing it.
By the third trimester, the follicles that will become brows and lashes are already in place. What is still catching up is pigment, which is why so many newborns look almost browless even though the architecture is finished.
So if your two-day-old appears to have no eyebrows at all, take a breath. The hair is there, it just has not shown up yet.
Why do newborn eyebrows and eyelashes look so light at birth?
Short answer: melanin takes time. Newborn hair often lacks mature pigment, so even dark-haired babies can have wispy, almost-invisible brows in the first weeks. The same applies to eyelashes and to the hair on the scalp.
A few factors shape how much brow hair you actually see at birth:
- Gestation length. Babies born preterm often have finer, lighter hair and may still carry some lanugo (Cleveland Clinic, Lanugo).
- Genetics. Hair color, density, and thickness are highly heritable. If one or both parents are very fair, expect faint brows for a while.
- Ethnicity. Babies with more melanin in their skin often have more visible hair sooner, but even then, pigment in the fine facial hairs can lag.
- Individual variation. Siblings from the same parents can look wildly different at birth, and that is normal.
The good news? This is almost always cosmetic. It is not a sign of any deficiency, and nothing you ate or did during pregnancy caused it. Really.
When do baby eyebrows and eyelashes become visible?
Most babies show clearly visible eyebrows and eyelashes between 2 and 3 months of age, with fuller growth usually in place by about 4 months. Babies with very fine, light hair may run a little later, and that is within normal range too.
A rough timeline many parents notice:
- 0 to 4 weeks: brows and lashes often look faint or absent.
- 4 to 8 weeks: a soft shadow begins to appear above the eyes.
- 2 to 3 months: brows and lashes are clearly visible in photos.
- 4 months and beyond: steady darkening and thickening for most babies.
Here is a little curiosity: eyelashes do grow, but they usually do not get dramatically longer in infancy. Human eyelash length is genetically regulated, and the cycle is relatively short, which is why adult lashes do not trail down to your chin (StatPearls / NIH). Your baby's final lash length will reveal itself over the first few years.
If your baby is several months old with truly no visible eyebrow hair, mention it at the next well visit. True absence of hair (atrichia) is rare, but it is one of those "better to ask" moments, and your pediatrician can reassure you or refer you onward.
Why did my baby's eyebrows fall out? (Cradle cap explained)
Because cradle cap is incredibly common, and sometimes it spreads.
Cradle cap is the everyday name for infantile seborrheic dermatitis, a harmless rash that mostly appears in the first few months. It shows up as greasy yellow or white scales on the scalp, and it can also affect eyebrows, eyelids, behind the ears, and the skin folds of the neck (American Academy of Dermatology). When scales build up on the brow, hair can thin or flake off with the crust.
The reassuring part: cradle cap almost always clears on its own by about a baby's first birthday, and the eyebrow hair grows back (American Academy of Dermatology). It does not scar. It does not mean anything is wrong.
Pediatric dermatology advice for managing it at home:
- Wash the area gently with a mild baby shampoo once a day or every other day.
- Apply a small amount of mineral oil or baby oil to soften scales, let it sit briefly, then brush or wipe off gently (American Academy of Dermatology).
- Do not pick or scratch. That can cause redness and open the skin to infection.
- Call your pediatrician if the rash spreads, weeps, looks infected, or bothers your baby.
For other scalp and skin questions, our guide on what it means when your baby scratches their head while nursing walks through dryness, eczema, and when to call the doctor.
Is it safe to use home remedies to grow baby eyebrows?
Please talk to your pediatrician first. Infant skin is thin, more absorbent than adult skin, and much more reactive, so even gentle natural ingredients can irritate or trigger an allergic response.
A few products pop up constantly in online advice and deserve a real answer:
- Coconut oil. Often recommended for cradle cap scales. There is some evidence it moisturizes infant skin reasonably well, but data on actually growing eyebrow hair is essentially nonexistent. If you use it, use organic, food-grade oil, and patch-test on a small area first.
- Aloe vera. Fresh plant pulp can soothe skin, but commercial aloe products often include alcohol, fragrance, or preservatives that can irritate baby skin. Not a proven hair-growth tool.
- Castor oil, essential oils, adult eyebrow serums. Skip these entirely on an infant. Near the eyes, the risk of irritation is high, and there is no medical evidence they grow brows faster.
The single best "treatment" is patience, mama. Well-fed, well-rested babies grow the eyebrows they were genetically going to grow, right on their own timeline.
When should I call my pediatrician about baby eyebrows?
Most of the time, you don't need to. Sparse or invisible newborn brows are a developmental stage, not a medical problem. The American Academy of Pediatrics' general growth and development guidance focuses on feeding, sleep, and milestones, not specific hair timelines (HealthyChildren.org (AAP)).
That said, mention it at a well visit if:
- Eyebrow or eyelash hair is completely absent past 4 to 6 months with no change in pattern.
- You see hair loss in patches that are red, scaly, inflamed, or spreading.
- Cradle cap is extensive, weeping, or not responding to gentle care.
- Eyelid skin is red, crusted, or swollen, which can point to an infection rather than cradle cap.
These are uncommon, but you are the expert on your baby, and your pediatrician is the right person to weigh in. It is one of those "better to ask" situations.
For broader newborn skin and body questions, our guides to newborn leg shaking and are all babies born with blue eyes cover other early quirks that catch new parents off guard.
Can my baby's eyebrow color change over time?
Yes, and often more than once. Infant hair color is notoriously unreliable. Pigment production matures over the first few years, so it is very common for a baby to start with dark hair, lighten, then darken again as they grow (StatPearls / NIH, Hair).
Factors that shape final brow and lash color include:
- Gestation length (premature babies often start lighter)
- Both parents' genetics, including recessive genes from grandparents
- Amount and density of hair at birth
- Overall hair color as it shifts through toddlerhood
One fun note: the MC1R gene, associated with red hair, can express in patchy ways. Some babies show reddish tones in brows, lashes, or body hair even when their scalp hair is a different shade. It is not a problem, just genetics doing genetics.
Is it safe to draw eyebrows on my baby?
Honestly, we'd skip it. The trend of drawing cartoon brows on infants for photos makes the rounds on social media every few years, and it looks cute, but baby skin is not a good canvas.
Here is why pediatric dermatology urges caution:
- Infant skin is thinner and more absorbent than adult skin, so whatever you draw on it can reach the bloodstream more easily.
- The area around the eyes is especially sensitive, and eyebrow pencils, liners, and paints can flake into the eye itself.
- "Non-toxic" and "FDA-approved for adults" are not the same as "safe for newborns." The FDA does not pre-approve cosmetics, and labeling varies widely (FDA, Cosmetics Safety Q&A).
- Markers, pens, Sharpies, paint, and adult lip or brow tattoos are absolutely not safe. Full stop.
If you really want the photo, use a brief bit of a pediatrician-approved product on a patch of skin first, and please keep it away from the eyes. Most parents who try it once decide the naked-brow newborn look is cuter anyway.
The bottom line
Your baby's eyebrows and eyelashes are already there on day one. They are just waiting on pigment, and most babies show visible brows and lashes by 2 to 3 months, with fuller growth by 4 months. Cradle cap can thin the hair for a while, and then it grows right back.
The best thing you can do? Feed, cuddle, and enjoy those wide-open newborn eyes. The brows arrive on their own schedule, and before long, you'll be staring at a toddler with very strong opinions, complete with the perfect little eyebrows they were always going to have.
If you're early in the newborn phase and still sorting out the basics, our guides to how long babies wear newborn clothes and is it ok to put a baby to sleep without burping cover more of those "wait, is this normal?" questions that come up in the first weeks.
This article is for informational purposes only and is not a substitute for professional medical advice. Always consult your pediatrician or healthcare provider for guidance specific to your baby.
