Panthenol is pro-vitamin B5, and it turns up on more ingredient lists than almost any other active you will recognise. It is in cleansers, serums, moisturisers, toner pads and even 30% acid peels. The reason is simple: panthenol does several useful things, does them reliably and almost never causes problems. It draws water into the skin, helps the barrier repair itself after damage and reduces the redness and stinging that stronger ingredients can cause. It is cheap, stable and dissolves easily in water, so formulators can add it to nearly anything. What it will not do is change your skin dramatically on its own. Panthenol is a support ingredient, and the best way to think about it is as the thing that makes the rest of your routine easier to tolerate.
What Is Panthenol?
Panthenol is the alcohol form of pantothenic acid, which is vitamin B5. On an ingredient list you will usually see it written simply as 'Panthenol'. You may also see D-panthenol or dexpanthenol, which is the biologically active form, and DL-panthenol, a mix of the active form and its mirror image. Many products use the DL form because it is cheaper; it still works, although only the D half is converted by the skin.
Once panthenol is absorbed, skin cells convert it into pantothenic acid. Pantothenic acid is a building block of coenzyme A, a molecule the body needs to make fatty acids and other lipids. That matters because the skin barrier is held together by lipids, including ceramides, cholesterol and free fatty acids.
You will occasionally see a related ingredient, panthenyl triacetate, which is an oil-soluble version used mostly in hair and oil-based products. It does a similar job but is far less common in face care.
What Panthenol Does for Skin
It hydrates. Panthenol is a humectant, which means it attracts water and holds it in the outer layer of skin, much like glycerin and hyaluronic acid. The site's ingredient data rates its dryness risk as low and notes that it is often added specifically to prevent or relieve dryness.
It helps the barrier recover. Because pantothenic acid is needed for lipid production, panthenol appears to support the skin's own repair process rather than simply sitting on top. In practical terms this shows up as less water loss through the skin (transepidermal water loss, or TEWL) after the barrier has been stressed.
It calms irritation. Panthenol has mild anti-inflammatory effects, and this is the main reason it appears alongside acids and retinoids. The site's data describes it as one of the least irritating cosmetic ingredients, with an irritancy rating of 0, and lists it as suitable for sensitive, reactive and post-procedure skin.
It supports healing. Dexpanthenol ointments have been used for decades on minor wounds, nappy rash and tattoo aftercare, because it encourages the cells that rebuild damaged skin (fibroblasts) to multiply. Face products are not wound treatments, but this is part of why panthenol is trusted on compromised skin.
Panthenol is rarely the reason a product works. It is often the reason you can keep using it.
What the Evidence Shows
The research on panthenol is modest in size but consistent in direction, and much of it comes from dermatology rather than cosmetic marketing.
Hydration and water loss. Several small controlled studies have found that creams with around 1–5% dexpanthenol increase skin hydration and reduce TEWL compared with the same cream without it. The effect builds over a few weeks of regular use, and studies on dry and normal skin show similar results.
Barrier repair after irritation. In studies where volunteers' skin was deliberately irritated with sodium lauryl sulfate (a harsh cleansing agent), skin pre-treated or treated with dexpanthenol recovered its barrier function faster and showed less redness than untreated skin. This is the clearest evidence behind panthenol's role as a 'buffer'.
Tolerability with retinoids and acne treatments. Dermatologists commonly recommend dexpanthenol moisturisers alongside prescription retinoids, and some studies report less dryness and peeling when the two are used together. The evidence here is less robust than for barrier repair, but it fits with everything else known about the ingredient.
What it does not show. There is no good evidence that topical panthenol fades pigmentation, treats acne, smooths wrinkles or boosts collagen in intact skin in any visible way. Laboratory studies on fibroblasts are sometimes quoted as 'collagen-boosting', but those findings relate to wound healing, not to anti-ageing results on a healthy face.
Why It's in Everything
The answer is partly science and partly practicality.
It solves a formulation problem. Exfoliating acids, retinoids and some preservatives can sting or dry the skin. Adding a few per cent of panthenol is an inexpensive way to make a formula feel gentler. That is why it shows up in The Ordinary's AHA 30% + BHA 2% Peeling Solution and in The Inkey List's 360° Skin Clearing Serum, where it sits fifth on the list just ahead of 2% salicylic acid.
It is easy to work with. Panthenol is water-soluble, stable across a wide pH range, compatible with nearly every other ingredient and has no colour or smell to cover. Few ingredients are this undemanding.
It is cheap. Panthenol costs a fraction of ingredients like ceramides or peptides, so even budget brands can include it at a meaningful level.
It reads well on the front of the pack. 'B5' is short, sounds like a vitamin and has a long reputation in hair care. It is no accident that the name ends up in product titles.
Across the site's catalogue, panthenol appears in around twenty products from five of the seven brands we stock, from £7.90 serums to £20 creams, and in almost every format.
Where We Differ: You Probably Don't Need a Dedicated B5 Product
Panthenol is sometimes sold as a hero ingredient, with 'B5 serums' and high-percentage ampoules positioned as barrier treatments in their own right. You may have seen it recommended as a must-have step for damaged skin, and that advice has a reasonable basis: panthenol does help barrier repair, and a product that puts it front and centre is unlikely to do any harm.
We see it a little differently. Because panthenol works well at 1–5% and is already in so many cleansers, moisturisers and serums, there is a good chance it is already in your routine. Read the labels of what you own before buying another product for it. If your barrier is struggling, the bigger gains usually come from stopping whatever is irritating it (often too much exfoliation or a retinoid introduced too quickly) and using a simple moisturiser with ceramides, glycerin and panthenol together.
The cautious, sensible default is a moisturiser or serum where panthenol is one of several barrier-supporting ingredients. A product built around panthenol is a reasonable choice if your skin is very reactive, if you like the feel, or if you want a single soothing step after a procedure. It is an option, not a requirement.
Who Panthenol Is For
Almost everyone. The site's data lists panthenol as suitable for all skin types, with low ratings for irritation, dryness, purging and clogged pores, and nothing under 'avoid if'.
Dry and dehydrated skin. As a humectant, panthenol works well alongside oils and occlusives such as squalane. The dry skin ingredients guide covers how to combine them.
Sensitive and rosacea-prone skin. Panthenol is one of the few actives that sensitive skin rarely objects to. The sensitive skin guide and rosacea guide both explain why barrier support comes before anything else.
Oily and acne-prone skin. With a comedogenic rating of 0 and a light, water-based texture, panthenol suits oily skin that still needs hydration, particularly when using drying acne treatments.
Retinoid and acid users. If retinol or an exfoliant is leaving your skin dry or tight, a panthenol-containing moisturiser is one of the simplest fixes. The retinol vs retinoids guide covers how to introduce them gently.
Pregnancy. The site's data marks panthenol as 'safe' in pregnancy, with no reproductive or developmental concerns in the available safety data. The pregnancy-safe skincare guide covers what to check in the rest of your routine.
The one exception worth knowing about is allergy. Allergic reactions to panthenol are rare, but they have been reported, usually in people who use dexpanthenol ointments heavily on broken skin. If a product with panthenol causes itching or a rash, stop using it and patch test before trying another.
How to Use Panthenol
Use it whenever suits you. Panthenol does not increase sun sensitivity and does not need to be separated from other ingredients, so morning, evening or both are fine.
Do not worry about the percentage. Most leave-on products use 1–5%, which is where the research sits. Higher concentrations exist, but there is little evidence they do more for intact skin.
Layer it like any water-based product. A panthenol serum goes on after cleansing and before heavier creams. If panthenol is in your moisturiser, you do not need to add anything. The layering actives guide explains the order.
Pair it freely. Panthenol sits comfortably with niacinamide, hyaluronic acid, ceramides, allantoin, madecassoside and ectoin, and it is a good companion for acids and retinoids. There are no ingredients you need to keep it away from.
Give it time. Hydration improves quickly, but barrier recovery tends to show over two to four weeks of consistent use.
Products Worth Considering
The Ordinary's Hyaluronic Acid 2% + B5 (with Ceramides) (around £8.80 for 30ml) is the easiest way to see panthenol doing its usual job as part of a team. It combines several forms of hyaluronic acid with panthenol and a ceramide-type lipid blend, and suits almost any routine. The Original Formulation (around £7.90) is the same idea without the added lipids. The hyaluronic acid guide explains how to use either.
The Ordinary's Amino Acids + B5 (around £8.80 for 30ml) puts panthenol fifth on the list, alongside betaine, sodium PCA and a range of amino acids, all of which help skin hold water. It is a light, water-based hydrator for skin that does not want anything heavy.
The Inkey List's Ectoin Hydro-Barrier Serum (around £15.00 for 30ml) pairs panthenol with 2% ectoin, hyaluronic acid and a ceramide blend, and is a good choice for skin that feels tight or reactive.
The Inkey List's Vitamin B, C and E Moisturiser (around £9.00 for 50ml) is a simple budget moisturiser with panthenol, niacinamide and a vitamin C derivative.
For cleansing, Cetaphil's Gentle Skin Cleanser (around £11.50 for 236ml) has a very short formula with panthenol fourth on the list, after water, glycerin and cetearyl alcohol, followed by niacinamide. It is a sensible default for dry or sensitive skin.
If you would prefer a product built around panthenol, Purito's Mighty Bamboo Panthenol Cream (around £20.00 for 100ml) and Panthenol Serum (around £20.00 for 30ml) name it as their lead ingredient. We do not yet have the full ingredient lists for these on the site, so check the label before buying.
You can browse the wider serum, moisturiser and cleanser ranges in the shop.
Common Mistakes
Buying it twice. Check what you already use. A routine with a panthenol cleanser, serum and moisturiser is not harmful, but the third product is unlikely to add much.
Expecting visible anti-ageing results. Panthenol makes skin more comfortable and better hydrated. It is not a substitute for retinoids, vitamin C or sunscreen.
Using it to mask a problem. If your skin needs constant soothing, the cause is usually something else in your routine. Panthenol helps recovery, but it works best when the irritation has stopped.
Reading 'B5' as a dose. A product with B5 in its name may contain more or less panthenol than one that does not mention it. The ingredient list is a better guide than the product name.
Frequently Asked Questions
What does panthenol do for skin? Panthenol hydrates the skin, helps the barrier repair itself and reduces irritation. It is converted in the skin to pantothenic acid (vitamin B5), which is needed to make the lipids that hold the barrier together.
Is panthenol the same as vitamin B5? Not quite. Panthenol is pro-vitamin B5: the skin converts it into pantothenic acid, which is vitamin B5. Panthenol is used because it is more stable and absorbs better.
Is panthenol good for sensitive skin? Yes. It is one of the least irritating ingredients in skincare and is often added to formulas specifically to make them gentler.
Can panthenol clog pores? It is very unlikely. The site's data gives it a comedogenic rating of 0, and it suits oily and acne-prone skin.
Can I use panthenol with retinol, AHAs or vitamin C? Yes. There are no known conflicts, and panthenol is commonly used to reduce the dryness and irritation that retinoids and acids can cause.
Is panthenol safe during pregnancy? The site's data rates it as safe, with no concerns in the available safety data. Check with your midwife, GP or pharmacist if you have any doubts.
Do I need a dedicated panthenol serum? Usually not. Panthenol is effective at the levels found in many moisturisers and serums, so check what you already use first. See all products containing panthenol for the full range on the site.
