The supplement you started taking a few weeks ago isn’t what made your hair grow.

Every so often a client some into the salon and tells me she started a supplement a couple of weeks ago and thinks it’s already helping her hair grow.

I completely understand why it feels that way. When we’re worried about our hair, we start paying attention to every little change. We look more closely in the mirror. We notice what ends up in the brush or the shower. When we finally start something new, it’s natural to want to believe that this might be the thing that’s finally working.

The thing is that hair simply doesn’t respond that quickly.

Hair grows in cycles, and those cycles begin months before we see anything happening in the mirror. So if we start a supplement today and a couple of weeks later feel like our hair is growing faster, that growth actually began long before the supplement entered the picture. That hair follicle was already in its growth phase.

Each follicle on the scalp moves through a repeating cycle that unfolds over months and even years.

Here’s a super simplified way of what that cycle looks like.

The Hair Growth Cycle

Anagen | Growth Phase

This is when the hair is actively growing.

This phase can last anywhere from 2 to 7 years.

Catagen | Transition Phase

The follicle begins to shrink and detach from the blood supply.

This phase lasts about 2 to 3 weeks.

Telogen | Resting Phase

The hair rests in the follicle before eventually shedding.

This phase lasts about 2 to 3 months.

After the hair sheds, the follicle begins producing a new hair and the cycle starts again. What this means is that the hair we see growing today actually entered its growth phase months ago.

Hair growth is slow and hair changes reflect what has been happening in the body over time, not just what we started last week.

Thinking about hair in terms of a general timeline can make this much easier to understand.

Month 1

Something shifts in the body.

Stress increases, hormones change, illness occurs, or the body experiences some kind of internal pressure.

Month 2–3

The hair that responded to that shift enters the shedding phase.

This is often when we start noticing more hair in the shower or brush.

Month 3–6

If the body begins receiving better support, new hairs can begin growing again.

But it takes time before that growth becomes visible.

What we’re seeing today usually reflects what the body was experiencing several months ago.

This is why chasing the newest product or supplement rarely provides the full answer. Hair tends to respond when the body itself begins feeling supported again. When the internal environment improves, the follicles often follow. It just takes time for the hair cycle to catch up.

I hope that seeing this timeline gives you a better perspective of what’s really going on behind the scenes. My goal is to help you understand why quick fixes don’t work so that you can start focusing on personalized support for your body in ways that allow the hair cycle to respond over time.

As you can see this process requires a lot of patience and the sooner we focus on targeted solutions, the sooner we can get results.