Straight answer: washing your hair with beer is a real, decades-old folk beauty practice, and there is a genuine mechanism behind it: beer contains proteins from malted barley, B vitamins and, once the alcohol evaporates, a mild acidic pH that can smooth the hair cuticle and add temporary shine and body. It is not a scientifically proven treatment with clinical trials behind it, and it will not fix damage, but it is not just an old wives’ tale either, it works the way a light protein rinse works.
What Is Actually in Beer That Could Help Hair
Beer contains three ingredients that show up independently in mainstream hair care: hydrolyzed proteins left over from malted barley and yeast, B vitamins (including biotin, part of the B-complex group), and natural sugars and starches from the brewing process. Hydrolyzed wheat and barley proteins are common, deliberately added ingredients in commercial shampoos and conditioners, where they temporarily fill in gaps in the damaged hair cuticle, making strands feel smoother and look shinier until the next wash.
Beer is also mildly acidic, typically in the pH 4 to 4.5 range, similar to the “acidic rinse” logic behind products like apple cider vinegar hair rinses. Hair’s natural cuticle lies flatter and reflects more light in a slightly acidic environment, which is the main reason both beer rinses and vinegar rinses get credited with adding shine, it is a pH and cuticle-smoothing effect, not a nutrient the hair is absorbing and using to grow.
How People Actually Do a Beer Rinse
The common method is to let a can or bottle of flat beer sit out for a few hours (or overnight) first, to reduce the alcohol content and let some of the carbonation dissipate before it goes anywhere near your scalp, since fresh carbonation and higher alcohol content can be drying. After a normal shampoo and rinse, beer is poured through damp hair and either left in for a few minutes or worked through as a final rinse before towel drying. Light or pale beers are typically preferred over dark stouts, since dark beer can temporarily tint very light or gray hair.
What It Will Not Do, and the Smell Problem
A beer rinse is a temporary cosmetic effect, not a treatment for hair loss, split ends or chemical damage. The protein content is genuinely present but nowhere near concentrated or specifically engineered the way it is in a purpose-built protein treatment, and there is no clinical research specifically testing beer rinses the way there is for, say, beer’s effect on hydration or other beer-and-body questions. The honest way to think about it is closer to “cheap, mild, temporary conditioning rinse” than “hair treatment.”
The other practical issue is smell. A beer rinse leaves hair smelling like beer until it is rinsed with plain water afterward and fully dried, which most people who use this method do specifically to avoid walking around smelling like a brewery. If that trade-off is not appealing, the same protein-and-mild-acid effect is available from purpose-made products without the smell.
Other Beer Hacks That Are Mostly Myths
A beer hair rinse is one of the milder viral “pour beer on something” hacks out there, and it holds up better than most of the others we’ve tested. In our roundup of 7 viral beer hacks you should actually avoid, using beer as windshield washer fluid, a mosquito repellent, or a face mask all rate as skip-it hacks: the sugar in beer leaves a sticky residue on glass, there is no evidence beer repels mosquitoes any better than plain water, and beer’s mild acidity on facial skin is more likely to cause irritation than the gentle exfoliation people claim.
- Windshield washer fluid: sugar residue attracts dirt and can gum up wiper mechanisms over time.
- Mosquito repellent: no evidence beer keeps mosquitoes away better than water; some studies suggest the opposite.
- Face mask: beer’s acidity and yeast content are more likely to irritate facial skin than exfoliate it safely.
If you’d rather just drink the beer instead of pouring it on your hair, our full library of best-beer guides is the better use of a good six-pack, starting with our best IPA picks if you want something worth actually tasting.
FAQ
Does washing your hair with beer actually work?
It can add temporary shine and smoothness through the malted barley proteins and mildly acidic pH in beer, similar to how a protein rinse or acidic vinegar rinse works. It is a cosmetic, temporary effect rather than a proven treatment.
What kind of beer is best for a hair rinse?
Light, pale beers that have been left to go flat for a few hours are generally preferred over fresh, carbonated or dark beer, since flat beer is gentler and pale beer will not tint light hair.
Will a beer rinse make my hair smell?
Yes, until it is rinsed out with plain water and dried. Most people do a beer rinse followed by a final water rinse specifically to avoid the smell lingering.
Can a beer rinse repair damaged hair?
No. It offers a temporary cosmetic smoothing and shine effect from surface proteins, not the kind of deep repair a dedicated damage treatment provides.
More Beer Facts and Guides
- Does Beer Hydrate You at All? What the Rehydration Studies Show
- Beer Hacks: The Full Guide to Cooling, Cleaning, Cooking, Camping and Garden Tricks
- 7 Viral Beer Hacks You Should Actually Avoid
- Best IPA Picks
