Welcome to Skin Insights by YSBB.
"After I wash my hair, the drain is full of strands."
"Is this the start of hair loss?"
"How many hairs can fall out per day without worrying?"
Hair shedding is a normal, everyday occurrence. But when does it cross the line into actual hair loss?
Today, we’ll explain what’s considered normal when it comes to hair shedding during shampooing—and when you should consider seeing a dermatologist.
1. How many hairs can fall out per day?
- On average, the human scalp contains about 100,000 hairs, and a portion of these go through a natural cycle of shedding and regrowth every day.
- Normal daily shedding: Around 100–200 strands.
- During shampooing alone: 50–100 strands can be expected, with the total reaching up to 150 including brushing and blow-drying.
- About 10% of all scalp hairs are in the resting (telogen) phase at any given time—roughly 10,000 hairs ready to shed.
- It’s also normal for more shedding to occur seasonally or due to various lifestyle factors, with temporary increases up to 200 hairs per day.
Note: If you shampoo every other day or often wear your hair tied up, you may notice more shedding all at once—that doesn’t necessarily mean something’s wrong.
Also, if you have long hair, even a small amount of shedding can appear more dramatic than it really is.
2. When could shedding during shampooing be a sign of hair loss?
- Fine, short hairs are falling out: This may indicate a shortened hair cycle and early-stage progressive hair loss.
- Widening part or visible thinning at the crown: Could reflect reduced density.
- More scalp showing through: Suggests both reduced hair count and thickness.
- Large clumps falling out while shampooing or brushing: Might be a sign of acute telogen effluvium or postpartum shedding.
Tip: Seeing lots of short, thin hairs fall out may mean the hair follicles are weakening. A scalp exam is strongly recommended in this case.
3. Hair shedding or actual hair loss? Here’s how to tell the difference.
- Shedding amount: Normal = up to 200/day; Concern = consistently more than 200/day
- Hair type: Normal = thick, long hairs; Concern = mostly thin, short hairs
- Scalp appearance: Normal = no visible changes; Concern = widening part, visible crown
- Scalp condition: Normal = healthy skin; Concern = oily, flaky, itchy, or inflamed
- Symptoms: Normal = none; Concern = itching, breakouts, dandruff, excess oil
Key Point: More important than the number of hairs lost is the pattern of change and the condition of the scalp.
4. How does YSBB Skin Clinic evaluate shedding?
- Scalp imaging to examine follicle density and health.
- Hair shaft and root thickness analysis.
- Bloodwork to check hormone, iron, and nutrient levels when needed.
- Differential diagnosis of male pattern hair loss, female pattern hair loss, and telogen effluvium.
Reminder: What looks like simple shedding may actually be early-stage hair loss. Once it progresses, recovery becomes harder—early diagnosis is crucial.
Final Thoughts
Daily shedding is part of a healthy hair cycle. But it’s not just about how much you’re losing—it’s about the type of hair and changes in your scalp.
"Hair loss starts not with quantity, but with the *quality* of the hair that’s falling out."
At YSBB Skin Clinic, we use scientific methods to evaluate your hair and scalp health—helping you understand whether it’s simple shedding or something more.
YSBB Skin Clinic, Seoul, Korea