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The Ordinary PHA 5% Exfoliating Lip Serum
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Highlights
Summary
Your Lips Have Chemistry. Powered by PHAs, The Ordinary's PHA 5% Exfoliating Lip Serum targets the surface of your lips to exfoliate, hydrate, and plump. The result? Smoother, healthier-looking lips—with undeniable chemistry.
Key Ingredients
- Gluconolactone (Polyhydroxy Acid): Helps gently exfoliate away dead skin, for a smoother lip appearance.
- Ectoin: Supports the skin barrier to help retain moisture and protect against external aggressors.
- Glycerin: Helps restore lip hydration to support the natural exfoliation process.
- Alpha Hydroxy Acids (Citric Acid, Malic Acid and Tartaric Acid): A combination of 3 alpha-hydroxy acids support exfoliation, while also imparting a sour taste to the formula.
- Daucus Carota Sativa (Black Carrot): An extract of black carrot rich in anthocyanins, known for their antioxidant properties
- *All ingredients in PHA 5% Exfoliating Lip Serum are considered food grade
- *This plant-derived ingredient may contribute to colour variations in the product ranging from vivid pink to pale peach however should not impact efficacy.
Research Results
- Gentle Exfoliation: Gently exfoliates and smooths lips while respecting the barrier
- Smoothness: Promotes skin renewal for smoother-looking lips.
- Shine: Gives lip a more radiant shine
- Hydration: Increases moisture content by 30%* for plumper lips even when bare*
- *Clinical testing on 22 subjects after using product 3x/week for 2 weeks.
Item 2645081
Apply a thin layer onto clean, dry lips on alternate evenings as needed. Allow the product to dry. Apply lip balm as needed throughout the day. If irritation occurs, rinse off, cease use, and consult a physician. Use only as directed on unbroken skin. Avoid contact with eyes. Patch testing prior to use is advised. Refer to our website for a patch test guide, regimen guide, and product compatibility. Keep out of reach of children. It is recommended that prior to exposure to the sun, users apply sunscreen or an SPF lip balm.
Glycerin, Aqua/Water/Eau, Gluconolactone, Ectoin, Daucus Carota Sativa (Carrot) Juice, Citric Acid, Malic Acid, Tartaric Acid, Sodium Hydroxide, Xanthan Gum, Potassium Sorbate, Sodium Benzoate.
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Reviews
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Ratings Distribution
Most Helpful Positive Review
Game changer-threw out all my sugar scrubs
Finally, a lip exfoliating product that delivers! I am constantly buying products for my lips that actually smooth lips and keep them chap free. Physical exfoliants harshly pull flaky dead skin off, often leading to the pulling off of healthy skin and then I'm left dealing with a whole other issue o...
Most Helpful Critical Review
Not what I hoped for
I was really excited to use this, as I struggle with chronically dry lips no matter how much water I drink or whatever lip balms I use. I have used glycolic acid before to exfoliate my lips but did so sparingly so I was super excited to see a lip-specific exfoliating product but I am disappointed. O...
147 results
Kinda disappointed
I was really looking forward to using this as I regularly use a lot of The Ordinary's products, but the serum dried my lips out even when I used lip balm after application. It helped me to use it more infrequently (once a month instead of once a week), but I was still shocked at how much more cracked and dry my lips were after I first started using it. I wouldn't really go out of my way to buy this again, but I will say that the taste isn't as horrible as some have said if you accidentally get it in your mouth (atleast for me)
Great for Dark Lips
I have been using this lip serum since Nov. 2025. I thought this lip serum would be helpful in keeping my lips soft. I didn't have much hope in this lip serum lightening my dark lip hyperpigmentation. But to my surprise, within 60 days of use as instructed my dark lips are no more. My lips are smooth and have great pigment. My only concern is the product pictured online is a very pink color and my bottle is a fair pink/cream color. Not sure what color it should be.
Another wonderful product by The Ordinary
I was looking for a lip exfoliator and as I passed The Ordinary display at Ulta, I saw this product. I use several products from The Ordinary, so I decided to give this a try. It's a liquid with the consistency of a thin syrup. It does NOT have "scrubbing grains" in it…..it comes with a dropper, so I put one small drop on my finger and apply it to my lips. I do this at night before bedtime. I'm surprised this works just like the "scrubs", but without the scrubbing beads. My lips are soft and smooth in the morning…no mess. They suggest using it every other day…I have been using it Monday, Wednesday and Fridays. In time, I may use it more often. I highly recommend this product.
Lasts forever
I've had this bottle since October and I've been steadily using it 1-2 times a week. It lasts forever! It also works great, you hardly need to use any and I can feel the results the next morning.
Best thing I have bought for my lips!!
I've always been bad at biting and picking at my lips for years and years. If you do it too then you know the struggle. I've used every chapstick and balm on the market, they feel nice but nothing I've found truly heals my lips. I bought this about two weeks ago to try and I noticed a difference after the first use. After about 3-4 uses every other night before bed, my lips are fully healed and the softest they have ever been. I don't leave reviews so I'm kicking myself for not taking before and after pictures but this means a lot to me and I hope it helps someone with the same issues I have. Yeah, it doesn't taste great but that's the last thing I cared about when I tried this product. One bottle will last forever and I'll continue to use this on a regular basis. The Ordinary for the win!!