Baby Not Responding to Facial Expressions
Medically reviewed by Dr. Emily Torres, PhD, CCC-SLP · Pediatric Speech-Language Pathologist
Content reviewed against published AAP, CDC, NIH guidelines
Last reviewed:
Speech and communication milestones vary widely, and worries about baby not responding to facial expressions, here is what you need to know.
The short answer
Responding to facial expressions is an important social communication milestone. By 2-3 months, most babies smile back when smiled at. By 6-9 months, they start reading emotions and responding differently to happy, sad, or angry faces. By 12 months, babies use "social referencing" - looking at a parent's face to gauge whether something is safe. Not responding to facial expressions can be a normal variation, especially in younger babies, but persistent lack of social engagement warrants discussion with your pediatrician.
Key takeaways
- Responding to facial expressions is an important social communication milestone. By 2-3 months, most babies smile back when smiled at. By 6-9 months, they start reading emotions and responding differently to happy, sad, or angry faces. By 12 months, babies use "social referencing" - looking at a parent's face to gauge whether something is safe. Not responding to facial expressions can be a normal variation, especially in younger babies, but persistent lack of social engagement warrants discussion with your pediatrician.
- Usually normal when: Not smiling back before 6-8 weeks of age
- Call your doctor if: Your baby has lost the ability to respond to faces after previously engaging socially (regression)
- Varies by age — see the age-by-age breakdown below
Parents everywhere have the same worry. You are doing the right thing by looking into it.
What Parents Should Know
According to AAP, CDC, NIH guidelines, responding to facial expressions is an important social communication milestone. By 2-3 months, most babies smile back when smiled at. By 6-9 months, they start reading emotions and responding differently to happy, sad, or angry faces. By 12 months, babies use "social referencing" - looking at a parent's face to gauge whether something is safe. Not responding to facial expressions can be a normal variation, especially in younger babies, but persistent lack of social engagement warrants discussion with your pediatrician. At 0-2 months, very young babies are still developing the ability to focus on faces. They may stare at your face during feeding but not yet smile back or mirror your expressions. The social smile typically emerges between 6-12 weeks. Not smiling back before 6 weeks is completely normal. It is generally considered normal when not smiling back before 6-8 weeks of age. However, you should contact your pediatrician promptly if your baby has lost the ability to respond to faces after previously engaging socially (regression).
Normal vs. Concerning
By Age
What to expect by age
0-2 months
Very young babies are still developing the ability to focus on faces. They may stare at your face during feeding but not yet smile back or mirror your expressions. The social smile typically emerges between 6-12 weeks. Not smiling back before 6 weeks is completely normal.
2-6 months
By 2-3 months, most babies smile in response to your smile. By 4-6 months, they may laugh, coo, and show different facial expressions in response to your tone and expression. If your baby consistently does not respond to your face or seems to look through you rather than at you by 4 months, mention this to your pediatrician.
6-18 months
By this age, babies should be reading facial expressions and responding to them - looking concerned when you look upset, laughing when you make a funny face, and checking your reaction when something new happens (social referencing). Limited response to facial cues at this age, especially combined with other social communication differences, may be evaluated as part of autism screening.
What to Tell Your Pediatrician
- Describe when you first noticed baby not responding to facial expressions and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your baby does not smile back at you by 3 months.
- Mention if your baby does not seem interested in faces by 4-6 months.
- Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- Not smiling back before 6-8 weeks of age
- Occasional moments of not engaging with faces when tired, overstimulated, or distracted
- Looking away from faces intermittently to self-regulate (this is healthy)
- Responding more to some caregivers than others
- Your baby does not smile back at you by 3 months
- Your baby does not seem interested in faces by 4-6 months
- Your baby does not show different reactions to happy vs. upset expressions by 9-12 months
- Your baby does not look at your face for reassurance in new situations by 12 months
- Your baby has lost the ability to respond to faces after previously engaging socially (regression)
- Your baby shows no social engagement at all - no eye contact, no smiling, no response to voices or faces
- Lack of facial expression response is accompanied by other developmental concerns like loss of babbling or motor skills
What You Can Do at Home
- Keep track of when you notice baby not responding to facial expressions — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that not smiling back before 6-8 weeks of age — this is generally within the range of normal.
- At 0-2 months, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Talk, read, and sing to your baby frequently. Narrate daily activities to build language exposure.
- While monitoring at home, seek immediate care if your baby has lost the ability to respond to faces after previously engaging socially (regression).
Related Conditions
Baby Not Smiling
Most babies begin smiling reflexively in the first few weeks and develop a true, intentional smile between 6-12 weeks of age. The timeline varies from baby to baby, and premature babies may smile later based on their adjusted age. If your baby is not smiling at all by 3 months, it is worth mentioning to your pediatrician, but many babies simply take a little longer.
Not Making Eye Contact
Eye contact develops gradually over the first few months of life, and newborns can only focus on objects about 8-12 inches away. Most babies are making consistent eye contact and tracking faces by 2-3 months, so very young babies who seem to look past you are usually developing normally.
Baby Not Smiling Back (No Social Smile)
A social smile - smiling specifically in response to seeing a face, hearing a voice, or during interaction - is one of the earliest and most meaningful social milestones. It typically develops between 6-12 weeks of age. While a general smile might happen randomly, a social smile is directed at people and shows your baby is connecting with you. If your baby is not showing social smiles by 3 months, it is worth discussing with your pediatrician.
Early Signs of Autism in Babies and Toddlers
Autism spectrum disorder (ASD) can sometimes be identified as early as 12-18 months, though most children are not diagnosed until age 2-3. Early signs include limited eye contact, not responding to their name, lack of pointing or showing, limited social smiling, and absence of pretend play. Having one or two of these signs does not mean your child has autism - many typically developing children share individual traits. However, a pattern of multiple social communication differences warrants evaluation. Early intervention, regardless of eventual diagnosis, consistently leads to the best outcomes.
Related Resources
Milestone Checklists by Age
Track your baby's developmental milestones from birth to 5 years with age-specific checklists.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
When to Call the Doctor
General guide on when to call the pediatrician, visit urgent care, or go to the ER.
Frequently asked questions
Is baby not responding to facial expressions normal?
When should I call the doctor about baby not responding to facial expressions?
When is baby not responding to facial expressions normal?
What causes baby not responding to facial expressions?
What should I mention to my pediatrician about baby not responding to facial expressions?
Is baby not responding to facial expressions normal at 0-2 months?
Is baby not responding to facial expressions normal at 2-6 months?
Should I go to the ER for baby not responding to facial expressions?
Does baby not responding to facial expressions go away on its own?
References
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss Baby Not Responding to Facial Expressions.
Things to mention
- Describe when you first noticed baby not responding to facial expressions and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your baby does not smile back at you by 3 months.
- Mention if your baby does not seem interested in faces by 4-6 months.
- Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- Your baby does not smile back at you by 3 months
- Your baby does not seem interested in faces by 4-6 months
- Your baby does not show different reactions to happy vs. upset expressions by 9-12 months
Urgent signs to report immediately
- Your baby has lost the ability to respond to faces after previously engaging socially (regression)
- Your baby shows no social engagement at all - no eye contact, no smiling, no response to voices or faces
- Lack of facial expression response is accompanied by other developmental concerns like loss of babbling or motor skills
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members
Related Resources
Bottom line
Most cases of baby not responding to facial expressions are normal. Talk to your pediatrician if your baby has lost the ability to respond to faces after previously engaging socially (regression).
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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Related Speech Concerns
Baby Not Smiling
Most babies begin smiling reflexively in the first few weeks and develop a true, intentional smile between 6-12 weeks of age. The timeline varies from baby to baby, and premature babies may smile later based on their adjusted age. If your baby is not smiling at all by 3 months, it is worth mentioning to your pediatrician, but many babies simply take a little longer.
Not Making Eye Contact
Eye contact develops gradually over the first few months of life, and newborns can only focus on objects about 8-12 inches away. Most babies are making consistent eye contact and tracking faces by 2-3 months, so very young babies who seem to look past you are usually developing normally.
Baby Not Smiling Back (No Social Smile)
A social smile - smiling specifically in response to seeing a face, hearing a voice, or during interaction - is one of the earliest and most meaningful social milestones. It typically develops between 6-12 weeks of age. While a general smile might happen randomly, a social smile is directed at people and shows your baby is connecting with you. If your baby is not showing social smiles by 3 months, it is worth discussing with your pediatrician.
Early Signs of Autism in Babies and Toddlers
Autism spectrum disorder (ASD) can sometimes be identified as early as 12-18 months, though most children are not diagnosed until age 2-3. Early signs include limited eye contact, not responding to their name, lack of pointing or showing, limited social smiling, and absence of pretend play. Having one or two of these signs does not mean your child has autism - many typically developing children share individual traits. However, a pattern of multiple social communication differences warrants evaluation. Early intervention, regardless of eventual diagnosis, consistently leads to the best outcomes.
Accent vs Speech Disorder in Bilingual Toddlers
When toddlers grow up hearing more than one language, they naturally blend sounds, patterns, and accents from both languages. This is normal and healthy, not a speech disorder. A bilingual child may pronounce some sounds differently than monolingual peers because they are learning the sound systems of two languages simultaneously. True speech disorders affect both languages equally, while accent influence appears only in specific sounds borrowed from one language to another.
Ear Fluid Affecting Baby's Speech Development
Chronic or recurrent middle ear fluid (otitis media with effusion) can temporarily reduce hearing by 15 to 40 decibels, which is like hearing through water. During critical periods of language learning, this muffled hearing can impact speech and language development. If your baby has frequent ear infections or persistent fluid, discuss the potential speech impact with your pediatrician.