Hey there,
Dr. Debra Shelby here with an interesting study on regrowth.
A 24-week randomized, double-blind, sham-controlled study looked at people with androgenetic alopecia using a helmet-style low-level light therapy device at home.
One group used the real light therapy device.
The other group used a sham device.
And after 24 weeks, the low-level light therapy group showed significantly greater hair density, along with improvement in hair diameter.
That matters because regrowth starts at the follicle.
Not just on the surface.
So if you are seeing more scalp at the crown, a wider-looking part, more shedding, or a hairline that feels harder to style, your follicles may need support.
Kiierr caps are built for that.
They use targeted red light therapy to help support follicle activity directly at the scalp.
No messy topical.
No daily pill.
No complicated routine.
Just consistent at-home scalp support, built around technology studied for hair density and hair thickness over time.
And right now, the 4th of July Cap Sale is live.
Use code JULY4 for $150 OFF Kiierr 272 DualWave
Use code JULY4MD for $325 OFF 302 and 312 MD caps
Here is how to choose the cap built for where your hair is today:
Kiierr 272 DualWave Cap
Use Code: JULY4 for $150 OFF
Best for dual-wavelength scalp support across visible thinning at the crown or hairline.
Kiierr 302 MD Ultra Flex Cap
Use Code: JULY4MD for $325 OFF
Best for full-scalp support across the crown, hairline, and temples in a simple 6-minute routine.
Kiierr 312 MD DualWave Cap
Use Code: JULY4MD for $325 OFF
Best for stubborn thinning areas that may need stronger dual-wavelength support over time.
Every Kiierr cap is backed by our 7-month money-back guarantee, because real visible change needs a fair window.
So if you are seeing the signs of thinning, this is a good time to stop guessing and start supporting your follicles at the scalp.
To healthier follicles,
Dr. Debra Shelby | 
