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Fix your Total Alkalinity and your hair will stop turning green.

Oxidized copper is what turns hair green and it can be because of high copper content in the local water supply or because the pool water is corrosive or both. Sanitizer level does not directly cause green hair but if the water is already corrosive then the effect will increase with high sanitizer levels.

Green stains underneath a tap on bathtubs and sinks indicate copper oxides in the water supply. The heavier the the stains the more copper is present.

In either case water can be corrosive because of low pH (acidic) but it can also be corrosive because it is soft (low mineral content). Soft water is hungry and it will dissolve minerals and metals from the pool tank, fittings, and Plumbing until it is satisfied. The opposite can also happen, where the water is too hard and minerals will precipitate out of solution and create deposits.

Pool water balance (not sanitizer level) should be adjusted by the operator so that the water is is neither corrosive nor scaling. The Langlier index is used to calculate how corrosive or scaling the pool water is and lets the operator determine the proper levels of minerals in the water. A good worksheet can be found at

A good rule of thumb is Total Alkalinity (baking soda) content should be approximately 90-120 PPM, Calcium Hardness at 180-220 PPM, pH 7.4 to 7.6. and should yield an index well within the -1 and +1 range which is neither significantly corrosive nor scaling.

In an 29C (~84F) pool this would yield a langlier index between

7.4 + 0.7 + 2.25 + 1.85 -12.1 = -0.6

7.6 + 0.7 + 2.35 + 2.0 - 12.1 = +0.55

In commercial pools the Langlier index is calculated weekly (or daily for high use/low volume pools) and additions made to total alkalinity and calcium hardness. In residential pools once per month should be adequate as long as total alkalinity is kept between 90 and 120.


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โˆ™ 2010-08-17 08:19:12
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Q: Why does blonde hair turn green in a chlorinated pool?
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Related questions

Why do you have to wait 1 week to get in pool after you bleach your hair?

Not sure about the week part but the chemicals in a pool will turn blonde green. No joking was in a pool as a kid and my hair was an algae green for a while after

How do fix blonde hair after pool water turns it green?

Go to a hair salon and get it done professionally.

What chemical is known to make blonde hair turn green?

chlorine it is known to turn light blonde hair a greenish color. so if your a blonde always wash your hair after swimming in a chlorine pool.

What colour can your hair go if you go in the pool after dying it?

Usually green, but that's only if you dye your hair blonde/

Why pool water turns white swimsuits green?

the chlorine, it also turns blonde hair green, trust me

Can chemicals in the pool turn your hair green even if your hair isn't dyed?

Yes - spending a long time in chlorinated water can turn parts of your hair a slight green colour regardless of artificial colouring.

Why some get green hair in pool and some dont?

mostly people with blonde hair or lightly dyed hair ( blonde highlights, dirty dish water blondes, ECT.) turns green because of the lightness the chlorine can have a worse chemical affect on the hair.

Does green hair from a pool mean the pool water is unsafe?

Well It only happens with blonde hair its something to do with the clourine in the water (pools) that's why you should have a shower befor and after you have been in the pool.

Why would a salt water swimming pool turn blonde hair green?

It is not the salt water pool or the salt water that is turning your hair green. It is a poorly maintained pool with a chemical imbalance - pH and total alkalinity out of required parameters.

What happens when you swim in a too chlorinated pool?

Dry skin. Bleached hair.

Can saltwater ruin hair dye?

Yes, but so can chlorinated pool water.

How does blonde hair react to copper in pool water?

It Turns Green. Its not the chlorine, it av=ctually hard metals such as copper

How long does green hair last from swimming in a pool?

Not aware that a swimming pool had green hair.

How do you get the green out of your hair from the pool?

Don't green hair is cool

What causes hair to turn green when you dye it?

Its often because you went from a dark color to a light color. Also, it can be blonde hair from chlorine in the pool, or a bad dye.

Can I add salt to a chlorinated pool to act as antifreeze?

Yes salt water pools are chlorinated pool any way.

Can you go from chlorinated pool to saltwater pool?

Since a saltwater pool IS a chlorinated pool (the only difference is how the chlorine is addded since it is manufactured by the SWCG and not added separately) the answer is yes.

What can happen if you swim in a pool with a chlorine level that is too high?

It is very unlikely for someone to experience chlorine poisoning by swimming, even in highly chlorinated pool water. Nonetheless, be sure to shower after swimming, because regular, chlorinated pool water can easily irritate skin and hair.

How long after swimming in a pool should you wait to dye your hair?

I depends if it is a chlorinated pool. If so, wait 24-72 hours. If it is natural water, you do not have to wait.

Does swimming in a chlorinated swimming pool damage your hair?

Yes, because the chlorine dries out your hair causing it to become brittle and fall out. It wont, unless you wash your hair after swimming.

Can a newt live in a chlorinated pool?


Can you dye your hair after swimming?

I depends if it is a chlorinated pool. If so, wait 24-72 hours. If it is natural water, you do not have to wait.

Can you swim if you dye your hair?

I depends if it is a chlorinated pool. If so, wait 24-72 hours. If it is natural water, you do not have to wait.

Can you swim after dyeing your hair?

I depends if it is a chlorinated pool. If so, wait 24-72 hours. If it is natural water, you do not have to wait.

Are chlorinated water good for hair?

Chlorine strips hair of it's oils and causes it to dry out. Make sure you condition after getting out of the pool to prevent breakage.