If you're making a statement of fact, you must provide a scientific source.
If the information comes from somewhere non-scientific (your experience, a blog), you must make that clear and not frame the statement as fact.
Do not tell others to look things up for themselves - the burden of proof is on the person who first posts something.
Read more about what qualifies as a source here
Do not ask for a diagnosis or attempt to give one to anyone else.
If you want to ask about a particular condition it must be in an impersonal way and it must not ask for how to diagnose.
This applies for any discussion involving medical conditions.
Please post general requests for help/recommendations in the weekly Haircare Advice megathread.
Sort posts by "hot" and the latest should be stickied to the top.
Read more about what makes a post specific vs. vague here
In order to keep the subreddit uncluttered, questions that are frequently posted will be removed.
Before posting, use the search bar first to see if your question has already been discussed.
r/haircarescience is not the place to ask for styling preferences - try other hairstyling subreddits for that.
Pseudoscience, chemophobia, or other anti-science rhetoric will be removed and repeat offenders banned.
Advertising a product without any scientific discussion is prohibited.
Product recommendations are allowed as long as it is not repetitive and you do not ask to take the conversations to DM or post affiliate links.
We have a zero tolerance policy for advertising (includes promoting your own social media) or shilling MLMs.
Scientific arguments may sometimes occur, but always treat other users with respect.
No harassment/racism/sexism/etc. will be tolerated. If you are combative or rude when others ask you to provide sources, you may be banned.
This rule also applies to your communication with the mod team.
Rule Number 8: No asking for advice on balding or hair loss of any kind.
If you have any questions about hair loss, balding or thinning please consult a medical professional.
Other subreddits you might be interested in include r/tressless and r/askdocs
--Product ingredient lists don't really tell us much about the product, formulation matters.
--If you're looking for product reviews, try another sub, or google it.
--Same applies to posts asking for dupes of a specific product.
--Posts asking for help checking a product ingredient list for "harsh" or "harmful" ingredients will be removed as it promotes chemophobia.
For hair color advice, try r/hairdye or r/fancyfollicles. For hair styling advice, start at r/hair.
Post has been removed as this is not a DIY subreddit. Try r/DIYbeauty.
Help us maintain a high quality science subreddit. Whenever someone makes a claim, ask them to provide a source.
Use the "report" button whenever you see rule-breaking to help the mods keep this place cleaned up.
Please visit the Haircare Advice megathread from time to time to offer advice to other users!
Discourse is encouraged, disrespect is not. Disagreements in science are common, but don't talk down to or insult who you're arguing with. We're all here with the same goal of learning.
Be open to criticism and source requests. Being combative in response to good-faith discussion may get you banned.
-If you'd like personal advice about your hair including styling, hair type, or product recommendations please post them in the weekly megathread. This keeps the main feed clear for hair science questions and discussions which are the main purpose of this subreddit.
-Asking for advice about medical conditions like hair loss, dandruff, or other scalp issues are not permitted and will be removed.
To apply for user flair, fill out this form
If you make several well-cited comments, you can get special flair to distinguish you as a knowledgable hair person. Gives you extra credibility!
Are you a professional stylist? Show the mods proof of your occupation and we can give you special stylist flair.
If your posting history indicates that you are a company or product representative, you need to be assigned brand representative flair in order to post about your products on this subreddit.