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Editor's Tip Editor's Tip

Start your routine by cleansing hair with Living proof.® Perfect hair Day™ (PhD) Shampoo.

Living proof.® Perfect hair Day™ (PhD) Conditioner

$25.00 Ships Free
8 oz

Availability: In stock


Can’t get enough of Living proof.®? We feel you. For a limited time, get a free Living proof.® Curl Leave-In Conditioner deluxe sample with qualifying $25+ purchase of any full-size product(s) from the Birchbox Shop. Use code: FRIZZFREE at checkout.

Birchbox Breakdown

Leave it to the whizzes at Living Proof to help you earn your PhD—perfect hair day, that is. This nourishing conditioner is made with OFPMA, a patented molecule that keeps hair cleaner for longer, so you can rock your blowout an extra day (or two). The innovative formula also smooths and strengthens hair, detangles, adds volume, and gives you a polished style—and it doesn’t get more perfect than all that. What’s more, this formula works on all hair types, including color- or chemically-treated hair, and protects hair against UV rays and heat styling. It’s made without sulfates, silicone, or oil.

How to Use

Work evenly through clean, damp hair. Rinse well.

Water, Cetearyl Alcohol, Behentrimonium Chloride, Octafluoropentyl Methacrylate (OFPMA), Cetyl Alcohol, Quaternium-87, PPG-3 Benzyl Ether Ethylhexanoate, Behenyl/Stearyl Aminopropanediol Esters, Linoleamidopropyl Dimethylamine Dimer Dilinoleate, Guar Hydroxypropyltrimonium Chloride, Hydroxyethylcellulose, Caesalpinia Spinosa Gum, Steareth-2, Steareth-10, Fragrance/Parfum, Citric Acid, Methylchloroisothiazolinone, Methylisothiazolinone, Limonene, Hexyl Cinnamal, Linalool, Citronellol, Butylphenyl Methylpropional, Magnesium Nitrate, Magnesium Chloride.

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Product Reviews & Sample Feedback

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Most Helpful Customer Reviews

Worth the money!

I was a little skeptical of the product, based only on the price. However, I've been using the 5 in 1 product for a while now and love it. With a coupon code in hand I ordered the shampoo/conditioner set. I am pleasantly surprised, the product does exactly as advertised. I am currently on day 4 post wash and my hair is still doing great with just a quick flat iron touch up in the morning. It feels clean, soft and light. The only thing I hate is the bottle! It is not easy to get the product out, I really have to shake it and squeeze hard. Definitely a repeat buy in the future!

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This bottle is HORRIBLE

I can barely get the product out of the darn bottle!! Highly disappointed at this price point for such a poor designed product. Boo!

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Creates waves!

This product is amazing. My hair is fine and typically fairly straight. This gave body and a slight wave, consistently.

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SERIOUSLY... Perfect hair day

My FAVORITE shampoo and conditioner set! It really does deliver what it says... Perfect hair day! And it smells great too! You will get so many compliments on how great your hair looks! My hair has never felt so soft!

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Love it.

I use this in conjunction with the PhD shampoo, 5-in-1, and Night Cap, along with the Full Thickening Cream. My hair has never looked or felt healthier, or taken less time to style. I have fine, wavy hair (and lots of it), and this helps it to stay hydrated and frizz-free without weighing it down. Definitely a keeper.

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