The Ordinary PHA 5% Lip Serum – Mindful Bath Time Companion for the Bathroom Vanity, Leave-On Lip Exfoliant
The Ordinary PHA 5% Lip Serum – Mindful Bath Time Companion for the Bathroom Vanity, Leave-On Lip Exfoliant
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Why you'll love it
- Replaces harsh physical lip scrubs with a gentle leave-on PHA + AHA chemical exfoliant
- Combines exfoliation and deep hydration in one overnight serum, simplifying the routine
- Barrier-respecting formula with Ectoin and Glycerin reduces risk of irritation
- Clean ingredient profile — vegan, alcohol-free, oil-free, silicone-free, and gluten-free
- Clinical 30% moisture increase claim provides tangible proof of efficacy
- Affordable price point within The Ordinary's science-led, accessible product range
Perfect for
- Overnight lip exfoliation as the final step in an evening skincare routine
- Smoothing dry, flaky lips on alternate evenings without abrasive scrubbing
- Prepping lips for smoother lipstick or lip gloss application the next day
- Boosting lip hydration and plumpness without a heavy balm feel
- Gentle chemical exfoliation for lips sensitive to physical scrubs
Product Information
LIP SCRUB ALTERNATIVE: A gentle chemical lip exfoliator with Gluconolactone and AHAs to exfoliate and promote a smoother lip appearance with a slightly tangy taste from the food-grade exfoliating acids
OVERNIGHT GENTLE EXFOLIATION: Gently exfoliates and smooths lips while respecting the barrier, promoting skin renewal for a more radiant shine and smoother look.
HYDRATION TREATMENT: Increases lip moisture content by 30%* for plumper lips, even when bare. Contains Black Carrot extract which provide the mild pink color and antioxidants. *Based on clinical testing on 22 subjects using the product 3x/week for 2 weeks.
SKIN BARRIER SUPPORT: Features Glycerin to restore lip hydration to support the natural exfoliation process and Ectoin to support skin barrier to retain moisture and protect against external aggressors.
HOW TO USE: Apply a thin layer to clean, dry lips on alternate evenings as needed. Allow to dry. Apply lip balm throughout the day. Use only as directed on unbroken skin. SPF is recommended before sun exposure.
Items Details
Features & Specs
Item Form: Serum, Water-Based
Skin Type: All, Dry, Normal
Product Benefits: Gently exfoliates and smooths lips while respecting the barrier, promoting skin renewal for a more radiant shine and smoother look.
Finish Type: Natural
Additional Features: Alcohol Free, Gluten Free, Oil Free, Silicone Free, Vegan
Frequently Asked Questions
How does this lip serum fit into a calming nightly wind-down routine?
Smooth a thin layer onto clean lips as the very last step of your evening ritual, then drift off while the PHA, AHA, glycerin, and ectoin work overnight — no rinse required, so it slots in seamlessly after your moisturizer.
Will the formula feel heavy or sticky if I apply it right before bed?
No. The water-based serum dries clear and lightweight on the lips, so it sits comfortably under a silk pillowcase and won't leave a greasy residue behind.
Does it have a strong fragrance that could disrupt a relaxing bath-time atmosphere?
The formula is intentionally fragrance-light, with only a soft note from the black carrot extract. It won't compete with candles, essential oils, or the calm mood you're building.
Can I pair this with my meditation or breathwork journaling moment?
Absolutely — the 30-second application is small enough to fold into any reflective practice, and many users treat the gentle swipe as a sensory cue that the day is officially closing.
Will using it nightly help me feel like I'm investing in long-term lip health?
Yes. The alternate-evening rhythm pairs exfoliation with hydration cycles, so over weeks you'll see progressively smoother, more comfortable lips — a tangible win for any self-care routine.
I'm building a clean, intentional evening ritual — is this a good product to start with?
It's a strong entry point because it combines exfoliation and deep moisture in a single, fragrance-light step, so you don't need to juggle multiple products on your nightstand.
Will the soft pink tint from the black carrot interfere with my white pillowcase?
The pigment is minimal and the serum dries down clear, so it won't transfer onto bedding once absorbed.
Can I use this as part of a Sunday reset or weekly self-care evening?
Yes — the alternate-evening schedule works beautifully as a Sunday reset step, especially if you have a Monday presentation or social event the next day.
Is this serum a good alternative to a long, multi-step lip masking session?
For most users, yes. The leave-on format replaces the need for a separate scrub, mask, and balm, condensing what would be a 10-minute process into a single 30-second swipe.
How does this compare to a relaxing lip oil or overnight lip mask?
Unlike a passive mask that simply occludes, this serum actively exfoliates with PHA and AHA while hydrating — so you get smoother, softer lips by morning, not just temporarily coated ones.
Is the formula truly clean enough for a low-tox lifestyle?
Yes. It's vegan, alcohol-free, oil-free, silicone-free, and gluten-free, and is built around a short, science-led ingredient list that aligns with most clean beauty standards.
Will I actually see results, or is this just a feel-good purchase?
The brand reports a 30% increase in lip moisture in clinical testing, and most users notice visibly smoother texture and easier lipstick application within the first two weeks of alternate-evening use.
I'm worried the acid will sting during my wind-down — is it gentle?
PHA (gluconolactone) is known for being one of the mildest exfoliating acids because of its larger molecule size, and it's buffered here with glycerin and ectoin for extra comfort.
What if I fall asleep with the serum still wet — is that safe?
It's designed to be left on overnight, so falling asleep mid-absorption is part of the intended use; just allow a minute or two for it to dry clear before lying down.
Is the price accessible enough to keep in a permanent self-care rotation?
The 0.5 fl oz tube is priced within The Ordinary's accessible range, and the alternate-evening application makes a single tube last several weeks of consistent use.
Can this replace my current lip balm in my nighttime routine?
Many users find they no longer need a separate occlusive balm on exfoliation nights, since the glycerin and ectoin deliver hydration without the waxy feel of a traditional lip balm.
How do I use The Ordinary PHA 5% Exfoliating Lip Serum in my routine?
Apply a thin layer to clean, dry lips as the last step of your evening routine on alternate nights. Leave it on overnight — do not rinse — and follow with SPF lip balm during the day.
How often should I use the lip serum for best results?
Start with two to three evenings per week, then build to alternate evenings as your lips tolerate it. Daily use is generally unnecessary and may increase irritation risk.
Can I layer it with my other The Ordinary serums?
Yes. Use it as the final step of your evening routine after water-based and oil-based serums have absorbed, so it sits as a dedicated lip treatment on top of your existing lineup.
Is this serum compatible with retinol or other strong actives in my routine?
Yes, but introduce it slowly — once a week at first — to avoid over-exfoliating the lips while your face is also adapting to retinoids or high-strength acids.
Can I wear lipstick or lip gloss over the serum the next morning?
Absolutely. After rinsing or wiping your lips in the morning, lipstick and gloss will apply more smoothly and evenly thanks to the exfoliated surface.
What's included in the box when I order it?
You receive one 0.5 fl oz tube of The Ordinary PHA 5% Exfoliating Lip Serum with a sealed cap; no applicator or extras are included, since the nozzle is designed for direct tube application.
Is the formula safe for sensitive skin in general?
Yes. It's vegan, alcohol-free, oil-free, silicone-free, gluten-free, and built around gentle PHA rather than stronger acids, making it suitable for most sensitive skin types when used as directed.
Will the product irritate my eyes if it migrates while I sleep?
The formula is mild and water-based, but you should still avoid direct contact with the eyes; if it does migrate, rinse gently with water.
What's the difference between a chemical lip exfoliant and a physical lip scrub?
A physical scrub uses granular particles to manually slough off dead skin, which can cause micro-tears and irritation, while a chemical exfoliant like PHA + AHA dissolves the bonds between dead skin cells gently, with no rubbing required.
