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Minoxidil works by extending the growth phase of the hair follicle, so each hair grows longer before it sheds. It’s the most familiar hair growth ingredient, and for early thinning it’s often the right place to start.

How minoxidil grows hair

Every hair cycles through growing, resting and shedding. Thinning hair spends less time growing. Minoxidil keeps follicles in the growth phase longer, so over time you see fuller coverage and less see-through scalp.

Why tretinoin makes minoxidil work better

Tretinoin helps minoxidil absorb into the scalp. That’s why Ulu Ultimate Regrow combines prescription minoxidil and tretinoin in one serum, made for women 45 and over with early thinning.

How long does minoxidil take to work?

Early changes typically show after about 3 months of twice-daily use. Hair grows slowly, so consistency matters more than anything else.

What if minoxidil stopped working?

Many women find minoxidil helps at first, then stalls, especially as DHT becomes a bigger factor after 50. That’s when latanoprost is worth a look.

  • Hair Bomb .05: starts with a latanoprost 0.05% base, for moderate to significant thinning, including women whose minoxidil or over-the-counter serums stopped working.
  • Hair Bomb .10: our strongest latanoprost serum, for advanced thinning.

With Hair Bomb, you can choose up to 3 optional add-ins and leave out anything you don’t want.

How to apply minoxidil serum

  1. Draw 1 mL into the calibrated dropper.
  2. Tip your head back and glide the fine tip along your scalp, using the bulb to control the flow.
  3. Cover every area where you want hair to grow.
  4. Wash your hands.
  5. Keep pets off your pillow and bed. Minoxidil can harm pets.

Do you need a prescription?

For UluRx serums, yes, and it’s included. After checkout, you answer a short questionnaire. A licensed medical provider reviews it, typically within 1–3 business days, and writes your prescription. Each bottle is compounded per patient. There’s no office visit and no subscription required, and our 30-day reformulation guarantee applies.

Frequently asked questions

Can women use minoxidil?
Yes. UluRx serums are made for women 45 and over, and men use them too.

Can I combine minoxidil with other hair loss ingredients?
A compounding pharmacy can combine prescription ingredients into one custom serum, so you use one bottle instead of several. Your provider decides what fits.

Is minoxidil safe around pets?
Wash your hands after applying it, and keep pets off your pillow and bed.

Watch:

Ulu Ultimate Regrow · Hair Bomb .05 · Take the hair growth quiz