More follicles can enter the resting and shedding phases together.
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Peptide scalp serum · 30 ml
Postpartum shedding changed your part? Start where it shows.
A water-light, fragrance-free cosmetic serum made for a simple scalp-care routine through the postpartum shedding chapter.
30 ml · 30-night supply
+22% hair density*
−34% follicles in the shedding phase*
✓ Free U.S. shipping
✓ Secure Shopify checkout
Ships from the USA in 5–8 business days. Subscription is optional and can be paused or cancelled.
✓ Fragrance-free
✓ Color-safe
✓ No rinse
✓ 30-second routine
Judge consistency, not a weekDocument your starting point and give it 90 days
Evidence, graded honestlyIngredient results are clearly labeled
Easy to live withWater-light · no rinse · no fragrance
Cancel anytimeNo calls and no long-term commitment
The change nobody explained
Your hair did not fail. The rules changed.
During pregnancy, elevated estrogen can keep more follicles in their growth phase. After delivery, the hormonal shift allows many of those strands to move toward shedding together—often becoming visible a few months later.
Finer strands make scalp visibility show up early along the part.
Postpartum shedding can feel especially visible when hair is pulled back.
Inside the bottle
Every active has a job.
The formula pairs growth-phase support with scalp care, targeting where the change begins instead of temporarily coating each strand.
Baicapil™
A botanical complex studied for supporting the growth phase and fuller-looking density.
Growth-factor peptides
Biomimetic messengers modeled on signals healthy follicles use during the growth phase.
Saw palmetto
A botanical included as part of the formula's broader scalp-support approach.
Lactic acid + PHA
Gentle exfoliants help keep the scalp and follicle openings clear without a harsh scrub.
Evidence without the smoke screen
Strong numbers. Honest footnotes.
Baicapil™, the botanical complex at the heart of the serum, was tested in a six-month, double-blind, placebo-controlled supplier study. The results belong to the ingredient—not the finished serum—and individual results vary. You deserve both facts.
Read the evidence and references →+22%increase in hair density*
−34%fewer follicles in the shedding phase*
*Supplier testing of Baicapil™ over six months; not a clinical trial of the finished serum.
☾ Your 30-second night step
Simple enough to repeat
Part. Drop. Massage. Done.
No complicated wash day. No oily roots in the morning. Put the actives where they are meant to work and let them stay there overnight.
- 1Start with a dry scalp
Use the dropper along your part and anywhere thinning is most visible.
- 2Massage for 30 seconds
Use your fingertips to distribute the water-light serum at the root.
- 3Leave it in overnight
No rinse needed. Repeat nightly and keep the routine consistent.
The honest timeline
Take the photo now. Judge it on day 90.
Hair changes slowly enough to be hard to notice day to day. A simple baseline gives you something more reliable than memory.
Same lighting, angle, and hairstyle.
Thirty seconds before bed, every night.
Look at your brush and shower first.
Recreate your first photo and decide.
Reassurance without hype
Know exactly what this serum can—and cannot—promise.
01This is not a drug. It does not stop the postpartum hormone shift or replace medical care, minoxidil, or a conversation with your clinician.
02Ingredient evidence is not finished-formula evidence. The study numbers on this page are clearly labeled for that reason.
03There is no three-wash transformation. Take a day-one photo and judge consistent use after one full hair cycle.
30 mlone-month supply
The Density Serum
Give your part one fair hair cycle.
Thirty seconds at night. A simple cosmetic scalp-care ritual for the postpartum chapter. Transparent evidence, no miracle promises.
- ✓ Water-light and fragrance-free
- ✓ Color-safe and no-rinse
- ✓ Pause or cancel subscription anytime
Questions, answered straight
Know what you are putting on your scalp.
Still unsure? Read the full science page or contact The Full Part before you order.
Contact the teamHow long until I can tell if it is working?
Hair does not move on an overnight timeline. Use the serum consistently for 90 days—one full hair cycle—and compare a clear photo of your part from day one. Individual results vary.
Will it make my hair greasy?
The Density Serum is a water-light, fragrance-free, no-rinse formula designed to disappear on dry hair. Apply it directly to the scalp rather than coating the lengths.
Can I use it while breastfeeding or on color-treated hair?
The serum is described as color-safe, but postpartum does not automatically mean a product is appropriate for every person. If you are pregnant, nursing, use prescription hair-loss medication, have a medical condition, or have any concern about an ingredient, review the complete ingredient list with your clinician first.
How do I apply it?
At night, part dry hair and apply a dropper directly along the part line and any other areas where thinning shows. Massage with your fingertips for about 30 seconds. Do not rinse.
Is this minoxidil?
No. The Density Serum is a cosmetic peptide and botanical formula, not a drug. Minoxidil has a different evidence base and side-effect profile; talk with your clinician if you are deciding between or combining approaches.
Am I locked into a subscription?
No. The monthly option can be paused or cancelled. A one-time purchase is also available. Review the store’s return policy before returning a personal-care item.
The Postpartum Hair Letter
One honest note at a time on shedding, recovery, scalp care, and what is worth your energy. No miracle promises.