Are Dimples Genetic? What Decides If Your Baby Has Them

Are dimples genetic? Mostly, yes. Cheek dimples tend to run in families, and you have probably seen them described online as a simple dominant trait. That last part is where the popular story breaks down. Inheritance here is real but messy. Dimples are not a clean on-off switch, and they can appear or vanish from one generation to the next.

So the honest answer parents want is this: a dimpled parent raises the odds, but nothing guarantees a dimpled baby, and a smooth-cheeked couple can still get one.

What a dimple actually is

A cheek dimple is a small quirk in the face muscle, not a feature drawn onto the skin. The usual suspect is the zygomaticus major, the muscle that pulls the corner of your mouth up when you smile. In some people that muscle is shorter or splits into two bundles. When you smile, it tugs the skin inward and leaves that little dent.

That physical basis matters for one reason: muscle shape is partly inherited and partly just how your face happened to form. So dimples sit in the gray zone between genes and plain anatomy.

Timing varies too. Some babies show dimples from birth. Others reveal them only once the round baby fat softens and the face lengthens. And a few people develop them later in childhood as the facial muscles mature.

Cheek dimples and chin dimples are not the same thing

People lump these together, but they come from different tissue.

• Cheek dimples come from that muscle variation and show up mainly when you smile.
• A chin dimple, or cleft chin, is a small notch in the bone and connective tissue of the jaw. It sits there whether you smile or not.

Both run in families. Neither follows a tidy one-gene rule. A cleft chin was long taught as a textbook dominant trait, and that turned out to be too simple as well. Treat any "single gene decides it" claim about faces with suspicion.

Can two dimpled parents have a baby without dimples?

Yes. And two parents with smooth cheeks can absolutely have a dimpled child. If dimples were a strict dominant gene, neither of those would happen the way it does. Both happen often.

Geneticists sometimes call cheek dimples an irregular dominant trait. Unpack that phrase and it means three practical things:

• Dimples are inherited often enough that they cluster in families.
• Whether the gene actually shows up on a given face varies from person to person.
• The trait can skip a generation and resurface in a grandchild.

That is why a family photo album can show dimples in grandma, nothing in mom, and dimples again in the toddler. Nothing went wrong. The trait simply did not express in the middle generation.

If you enjoy this side of genetics, the same "not as simple as school taught it" logic applies to eye color, hair, and more. Our guide to dominant and recessive traits and what your baby inherits walks through where the clean textbook model holds and where it falls apart.

Are baby dimples permanent?

Sometimes. It depends on the face underneath.

Many dimples in infancy come from soft baby fat pressing into a crease. As a child grows and that fat thins out, the dimple can fade or disappear for good. Dimples anchored to a genuine muscle split are more likely to stay for life. There is no test at birth that tells you which kind you are looking at. You mostly find out by watching the face change over the first few years.

The reverse happens too. A baby with smooth cheeks can develop a dimple later as the muscles finish forming.

How dimples fit the bigger inheritance picture

Dimples are a small, friendly example of a big truth: most visible traits are not decided by one gene flipping a switch. Height, face shape, and skin tone all come from many genes plus environment, working together. A trait can lean toward one parent and still surprise you.

That is the honest frame for any "will my baby have my ___" question. You can talk about odds. You cannot promise an outcome. For a wider tour of how features pass down, see our facts about how your future baby will look.

FAQ

Are dimples a dominant trait?

They are often called dominant, but that label is too neat. Cheek dimples behave as an irregular dominant trait, so they are inherited frequently yet do not follow strict dominant-gene math. Expression varies, and they can skip a generation.

If both parents have dimples, will the baby have them?

The odds go up, but there is no guarantee. Because dimples are not a simple dominant gene, two dimpled parents can still have a child with smooth cheeks.

Can dimples go away as a child grows?

Yes. Dimples caused by baby fat can fade as a child slims down and the face matures. Dimples tied to a real muscle variation usually last into adulthood.

Are cheek dimples and a cleft chin inherited the same way?

No. They come from different tissue, a muscle for the cheek and bone plus connective tissue for the chin. Both run in families, and neither follows a simple single-gene pattern.

The short version

Are dimples genetic? Yes, they tend to run in families, but inheritance is loose rather than lockstep, which is why dimples show up, skip, and reappear across a family tree. If you are curious which features your own child might inherit, preview your future baby and the traits they could get and see how the mix plays out.