r/HaircareScience

Community Overview
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About r/HaircareScience

This subreddit aims to provide resources for achieving better hair quality through scientific research in trichology, physiology, chemistry, and biology

The community at a glance

r/HaircareScience is a Subreddit for Beauty with roughly 1.0M members. It has been around since 2013. It uses a forum format for communication. It is the 5th largest community in the Beauty topic page.

Roughly 55K members have joined in the past year. Popular discussion topics include Hair, Looking For A, and Shampoo. Common discussion themes are Advice Requests. Product recommendations often mention shampoo and conditioner.

On Reddit
Established 2013
1.0M Members

Community Topics

Community Features

Forum

This community has a forum

Subreddit Analysis

via GummySearch
Yearly: +55K members
Growth: +5.5% / year

Member growth over time

All time (yearly)

  • 2014: 10K members
  • 2015: 7K members
  • 2016: 5K members
  • 2017: 12K members
  • 2021: 259K members
  • 2023: 584K members
  • 2024: 83K members
  • 2025: 53K members
  • 2026: 30K members

Past year (monthly)

  • Jul: 4K members
  • Aug: 3K members
  • Sep: 3K members
  • Oct: 3K members
  • Nov: 5K members
  • Dec: 6K members
  • Jan: 7K members
  • Feb: 5K members
  • Mar: 4K members
  • Apr: 5K members
  • May: 5K members
  • Jun: 4K members

Themes

  • Advice Requests
    28 posts in the past month
    1. Is there actual evidence behind K18? Why are they charging $75 while other bond builders on the market are much less expensive?
    2. Confused about hyaluronic acid
    3. What is the actual mechanism behind hair dryers that leave coarse, frizz-prone hair soft and smooth versus frizzy?
    #1
    Advice Requests
    Is there actual evidence behind K18? Why are they charging $75 while other bond builders on the market are much less expensive? · Confused about hyaluronic acid · What is the actual mechanism behind hair dryers that leave coarse, frizz-prone hair soft and smooth versus frizzy?
    28

Topics

  • Hair
    68 posts in the past month
    1. Is there a scientific reason why my hair feels healthier when I consistently heat style?
    2. What is the actual mechanism behind hair dryers that leave coarse, frizz-prone hair soft and smooth versus frizzy?
    3. Do silk pillowcases actually help with hair health?
    #1
    Hair
    Is there a scientific reason why my hair feels healthier when I consistently heat style? · What is the actual mechanism behind hair dryers that leave coarse, frizz-prone hair soft and smooth versus frizzy? · Do silk pillowcases actually help with hair health?
    68
  • Looking For A
    38 posts in the past month
    #2
    Looking For A
    38
  • Shampoo
    29 posts in the past month
    1. Does shampoo for hair growth exist or is it just a marketing term?
    2. Why are there/ ARE there humectants in shampoo?
    #3
    Shampoo
    Does shampoo for hair growth exist or is it just a marketing term? · Why are there/ ARE there humectants in shampoo?
    29
  • Conditioner
    19 posts in the past month
    #4
    Conditioner
    19
  • Looking For
    16 posts in the past month
    #5
    Looking For
    16

Flair

  • Question
    73 posts in the past month
    1. What’s scientifically the safest method for getting hair out of the face
    2. Is it ACTUALLY bad to get hair wet everyday?
    3. Is there actual evidence behind K18? Why are they charging $75 while other bond builders on the market are much less expensive?
    #1
    Question
    What’s scientifically the safest method for getting hair out of the face · Is it ACTUALLY bad to get hair wet everyday? · Is there actual evidence behind K18? Why are they charging $75 while other bond builders on the market are much less expensive?
    73
  • Discussion
    14 posts in the past month
    1. A note from the mods: updated rules, wiki, and what's coming
    2. Leave-in conditioner ingredient
    3. Do people who grow up with hard water naturally adapt to it?
    #2
    Discussion
    A note from the mods: updated rules, wiki, and what's coming · Leave-in conditioner ingredient · Do people who grow up with hard water naturally adapt to it?
    14
  • Research Highlight
    2 posts in the past month
    1. Compiled LLLT research for hair growth caps/helmets for androgenetic alopecia (pattern hair loss)
    2. Is cotton or satin better for reducing friction and breakage in headbands?
    #3
    Research Highlight
    Compiled LLLT research for hair growth caps/helmets for androgenetic alopecia (pattern hair loss) · Is cotton or satin better for reducing friction and breakage in headbands?
    2
  • Research Discussion
    1 post in the past month
    1. New free book: Science in Beauty
    #4
    Research Discussion
    New free book: Science in Beauty
    1

Product recommendations

  • shampoo
    31 posts in the past month
    1. Best shampoo/ conditioner for fine, dry, damaged, frizzy color treated hair
    2. What is the best shampoo for dry scalp
    3. what shampoo and conditioner would you recommend with someone who has dandruff, I currently use tgel but it makes my hair so dry and makes it feel itchy aswelll.
    #1
    shampoo
    Best shampoo/ conditioner for fine, dry, damaged, frizzy color treated hair · What is the best shampoo for dry scalp · what shampoo and conditioner would you recommend with someone who has dandruff, I currently use tgel but it makes my hair so dry and makes it feel itchy aswelll.
    31
  • conditioner
    10 posts in the past month
    1. Best shampoo/ conditioner for fine, dry, damaged, frizzy color treated hair
    2. what shampoo and conditioner would you recommend with someone who has dandruff, I currently use tgel but it makes my hair so dry and makes it feel itchy aswelll.
    3. Recommend Shampoo/hair products
    #2
    conditioner
    Best shampoo/ conditioner for fine, dry, damaged, frizzy color treated hair · what shampoo and conditioner would you recommend with someone who has dandruff, I currently use tgel but it makes my hair so dry and makes it feel itchy aswelll. · Recommend Shampoo/hair products
    10
View full analysis on GummySearchSynced 6/16/2026

Frequently asked questions

Who is r/HaircareScience for?
Best for Beauty enthusiasts looking for a Reddit-based community with forum discussion.
Is r/HaircareScience free to join?
This listing is not marked as paid-only. Access rules and any fees are decided by the community.
How many members does r/HaircareScience have?
Roughly 1.0M members, based on figures reported by the community or its host. Member counts are approximate and change over time.
What platform is r/HaircareScience on?
r/HaircareScience runs on Reddit. Reddit communities (or "subreddits") are forum-based groups on the popular social news aggregation, web content rating, and discussion website Reddit. Reddit is commonly known as "the front page of the internet". Users submit content to the site such as links, text posts, and images, which are then voted up or down and discussed by other members. From investing Reddit communities, to professional ones, to ones just for laughs, you're likely to find a community for you on Reddit.
What topics does r/HaircareScience cover?
On the Hive Index, r/HaircareScience is organized under Beauty.
How do I join r/HaircareScience?
You can join r/HaircareScience by clicking this link, or pressing the "Go to community" button above.
What are the Beauty communities like?
Communities for beauty enthusiasts covering skincare, makeup, fashion, and trends. Dedicated forums serve long-form discussion and product recommendations, while Facebook groups and smaller online spaces cater to more specific interests in beauty culture and style.
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Added 10/21/2021

Monthly Stats

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