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GlossaryRelative Humidity

amount of moisture in air relative to its maximum capacity

Relative Humidity (RH) is a measure of the amount of moisture in the air compared to the maximum amount of moisture the air can hold at a given temperature. It is expressed as a percentage; for example, 50% RH means the air is holding half of the moisture it could potentially hold at that temperature. This concept is important in various fields, including meteorology, HVAC, and even hair care, as it affects how hair behaves and responds to different environmental conditions.

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research Quasi-Static Torsional Deformation of Single Hair Fibers: Application of a Modeling Approach and Results from Cosmetic Treatments

February 2019 in “PubMed”

The research found that twisting hair fibers can show changes in stiffness and damage, and help tell apart different hair treatments.

research The Effect of Relative Humidity on the Spreading of Ethanol on Human Hair Fibers

1 citations , December 1972 in “Journal of Colloid and Interface Science”

Ethanol spreads well on hair at low humidity but less so at higher humidity due to water condensation.

research Evaluation of Hair Humidity Resistance and Moisturization from Hair Elasticity

4 citations , October 2007 in “PubMed”

Polyquaternium-70 shampoo is best for reducing frizz.

research Fractography of Human Hair

34 citations , October 1982 in “Journal of applied polymer science”

Moisture content significantly affects how human hair breaks.

research Volume Changes During Water Binding to Hair Fibers

3 citations , August 1980 in “Acs Symposium Series”

Hair increases in size when it absorbs water, and treatments like bleaching affect how much water it can take in.

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community My progress story for my hair loss treatment

in Progress Pictures 400 upvotes 2 years ago

User's hair loss treatment progress includes 1 mg finasteride, 2.5 mg minoxidil tablets twice daily, microneedling 3 times a week, and Fungoral shampoo twice weekly. Good progress and minimal side effects reported.

community We are manipulating our hormones, surely it's prudent to track bloodwork ?

in Finasteride/Dutasteride 64 upvotes 1 year ago

The conversation discusses whether individuals using hair loss treatments like Dutasteride (Dut) or Finasteride (Fin) should regularly check their hormone levels through bloodwork. Some argue it's important to monitor the effects of these medications on hormone levels, while others believe it's unnecessary if there are no side effects, citing cost and practicality concerns.

community How likely is it to reverse the hair count for each hair follicle?

in Chat 12 upvotes 1 year ago

Hair follicles can potentially produce more hair strands with treatments like Minoxidil and finasteride. Notable improvements in hair density are possible, but achieving multiple strands per follicle is uncertain.

community 1 year treatment - mixed feelings

in Is this regrowth? 75 upvotes 7 months ago

The user has been using finasteride for a year and recently started minoxidil, noticing reduced hair shedding but no significant regrowth. Suggestions include continuing the current regimen, adding micro-needling, and considering a hair transplant for more noticeable results.

community Is the DHT itch fact or fiction?

in Chat 16 upvotes 2 years ago

DHT itch's existence is debated, with some claiming it's real and others saying it's psychological. Finasteride, Ketoconazole shampoo, and addressing scalp conditions like dandruff or eczema may help reduce itchiness.

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