I love love love this base. My makeup lasted all day after being in the office (you know office air). Perfect base and smells so good too! The picture is after all day wear!
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Meet your new everyday essential - a skincare-infused base that gives you more than just a glow. Underwear Hydrating Base SPF 30 is a multitasking hybrid that protects, hydrates, and enhances in one simple step.
Meet your new everyday essential - a skincare-infused base that gives you more than just a glow. Underwear Hydrating Base SPF 30 is a multitasking hybrid that protects, hydrates, and enhances in one simple step. Whether worn alone for a natural radiance or under makeup as the perfect primer, it leaves skin looking fresh, smooth, and luminous all day.
Dewy finish that looks as good as it feels.
Broad Spectrum SPF30 Protection
Reduces Redness, Brightens & Evens Skin Tone
Enriched with Antioxidant Powerhouse Ingredients
Apply amount as required daily to the face & neck after all other skincare steps are completed. Choose to wear it as your final step in your skincare routine for a no makeup glowing complexion or apply your desired foundation on top.
AQUA, ETHYLHEXYL METHOXYCINNAMATE,GLYCERIN,ETHYLHEXYL SALICYLATE,DIETHYLAMINO HYDROXYBENZOYL HEXYL BENZOATE, PEG-8 PPG-8 DIMETHICONE,PROPYLENE GLYCOL,BIS-ETHYLHEXYLOXYPHENOL METHOXYPHENYL TRIAZINE,DIMETHICONE PEG-7 PHOSPHATE,MICA,PHENOXYETHANOL,AMMONIUM ACRYLOYLDIMETHYLTAURATE/VP COPOLYMER,HYDROXYETHYL ACRYLATE/SODIUM ACRYLOYLDIMETHYL TAURATE COPOLYMER,PANTHENOL,SODIUM STEAROYL GLUTAMATE,ALUMINUM HYDROXIDE,ETHYLHEXYLGLYCERIN,STEARIC ACID,TOCOPHERYL ACETATE,POLYSORBATE 60,SORBITAN ISOSTEARATE,BUTYLENE GLYCOL,BHT,POLYSORBATE 20,1,2-HEXANEDIOL,TIN OXIDE,OPUNTIA FICUS-INDICA STEM EXTRACT,TITANIUM DIOXIDE (CI 77891),IRON OXIDES (CI 77491),IRON OXIDES (CI 77492)
We offer worldwide shipping on all orders. Please note custom charges may apply for orders outside of the EU. For full shipping details and charges, please see checkout.
We are happy to refund any unwanted and unused products. Please see our Returns Policy for full terms and conditions.
IS THE UNDERWEAR HYDRATING BASE NON-COMEDOGENIC?
Yes - it's formulated to be non-comedogenic, meaning it won't clog pores, making it suitable for all skin types, including acne-prone skin.
DOES IT PROTECT AGAINST BOTH UVA AND UVB RAYS?
Yes - it contains a combination of chemical and physical filters that provide broad spectrum SPF 30 protection, shielding skin from UVA (ageing) and UVB (burning) rays.
CAN IT CAUSE OXIDATION OR CHANGE COLOUR ON THE SKIN?
Iron Oxide pigments can naturally oxidise over time, which may cause a slight colour change. However, Tocopheryl Acetate (Vitamin E) has been added to help slow this process and maintain the intended tone.
HOW DOES THIS PRIMER HELP MY MAKEUP LAST LONGER?
The soft-focus, light-reflecting technology smooths skin texture, allowing makeup to apply more evenly and stay fresh for longer.
IS IT SUITABLE FOR SENSITIVE SKIN?
Yes - it's formulated to be gentle, with soothing ingredients like panthenol and cactus extract (Opuntia Ficus-Indica), and without common irritants such as SLS, sulphates, phthalates, or formaldehyde.
HOW IS IT DIFFERENT FROM OTHER SPF PRIMERS?
It combines SPF 30, non-nano physical + chemical filters, anti-pollution protection, antioxidant defence, and a gentle hydrating base in one step, making it a true hybrid skincare-makeup product.
CAN I WEAR IT WITHOUT MAKEUP?
Absolutely - it delivers a soft-focus, glowing finish that looks beautiful on bare skin or under foundation.
IS IT VEGAN AND CRUELTY FREE?
Yes - it's 100% vegan and never tested on animals.
HOW IS IT DIFFERENT TO RADIANCE BASE?
Underwear Hydrating Base SPF 30 gives you glow and daily sun protection, with added skincare benefits like redness reduction and pollution defence. Radiance Base delivers pure luminosity and skin-blurring hydration, but without SPF.

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Overall rating: 4.2 / 5 from 28 reviews.
I love love love this base. My makeup lasted all day after being in the office (you know office air). Perfect base and smells so good too! The picture is after all day wear!
Karolina 5/5
I absolutely love the texture I find it to be super hydrating on the skin and an excellent primer to wear before applying make up. I find my make up is lasting longer and no cakey effects or shine which I find with some products. I have worn it both with makeup as a primer and as on its own and I love both I find it fab as a moisturizer and love that it has spf in it I found my skin was nice and dewy and loved knowing I had that protection over the sunny days. After having been wearing it regularly for the past couple of weeks I’ve also noticed a softness to my skin and again no drying out or flakiness which is what I’d usually suffer from. It’s a 10/10 from me such a fab multi use product and love that it’s packed with all the skin loving ingredients. P
Erica G. 5/5
Unbelievable. I wear it with and without make up and my SKIN is glowing and so hydrated at all times. As you can see the glow on my skin when I apply it on my skin. My make up lasts so much longer aswell. I cannot be without it. It’s simply amazing and I love it x
Laura N. 5/5
Water based product. Perfect for a dry skin type. Goes excellent onto to the skin at first application. Travel friendly also. Love this product.
Aoife D. 5/5
I really love this product. Easily absorbed light as a feather and gives a natural glow. And the only cream I have ever found with SPF 30 that does not go on like lard!!! So now wearing an SPF for the first time in years. So happy with this, and highly recommend it.
Debra S. 5/5 Verified
I normally love everything by sosu but didn’t like this product. The smell off the product put me off. Sorry 😔
Sarah O. 1/5 Verified
Hi S, I recently purchased the Underwear Hydrating Base SPF30, I was looking for a easy application product, I’m currently on chemotherapy treatment and this product has made my face look alive, I’m so sick from the side effects of chemo and this product makes me look like myself even though I feel like I’ve been hit by a tsunami on the inside.
Ursula L. 5/5 Verified
The smell is so disgusting, I had to bin it. It also broke my skin out, and I don't have reactive skin :(
Donna R. 1/5
Nice light base, nice glow without being too in your face
Joanne M. 5/5 Verified
This gives a beautiful glowy finish to your skin 🙌
Debbie O. 5/5 Verified
Lovely siilky dewy look on my skin. Made my skin look healthier. Really like this.
Trisha O’connor 5/5 Verified
Lovely would Highly recommend
J H. 5/5 Verified
As a woman age 55 who is obsessed with a skincare routine and will try anything once! can I just say I’m on my 6th tube of underwear since trying it out Love love love it
Rachel G. 5/5 Verified
Absolutely love it. So light.
Ann M. 5/5 Verified
I’ve tried all of these type of base products from a lot of brands. Said I’d give the SoSu a go and it’s by faaarr the best. The glow actually lasts all day and it doesn’t dry. Fantastic product!
Hayley R. 5/5 Verified
Beautiful product makeup glides on over it highly recommend.
Siobhan H. 5/5
This is my absolute favourite product ever made. I use it every day, the glow and softness when on my face is beautiful. I will never be without it. An Amazing product.
Eileen O. 5/5 Verified
Hydrating base didn't keep make up on at all, the 3 stars are for the nice glow and how it felt on skin .
Marie O. 3/5 Verified
Honestly LOVE THIS base! I use this mainly on no makeup days to give my 50 year old skin a bit of pep✨ I do have regular facials and this little bottle of magic just enhances my glow!! Thank you SOSU, you have me hooked on your products!!!
Louise J. 5/5
Lovely product
Anne B. 5/5 Verified
I'm 48 , this us not a product for older skin gave it to my 15yr old and she loves it ...personally I didn't think like the smell either I got it 50%off I sale and wouldn't have paid more for it, not one of sosus best products sadly
Sinead M. 1/5 Verified
Absolutely love this , I use it under my makeup for a healthy glow , applies beautifully providing a hydrating and glowy complexion.
Marie H. 5/5 Verified
Purchased this when it was on offer. My go to is POCO'S UGT so didn't want to pay full price as I think UGT is hard to beat. I prefer that UGT is a slightly thicker formula, this is very runny and I felt I needed to use more of it. My skin didn't feel hyrated & it broke me out in a rash.
Emily M. 1/5 Verified
Unfortunately this product totally broke out my skin. I’ve used almost all of So Sue cosmetics and this has never happened. I don’t have sensitive skin so unsure why this happened and I had this reaction to it.
Ashling F. 1/5 Verified
I am OBSESSED. I have been wearing it alone as my spf for the day and the glow I get from it is amazing. It also wakens my face up a bit more in the mornings with the glow off it. I really love it on my skin alone. I have ditched my other spf for the time I’ve been trialing it out and I’m really happy with the results. I have also been wearing it under my makeup, specifically with my complexion palette and just WOW. It’s the perfect combo for under the complexion palette would definitely recommend the 2 of them together, and that’s literally all you need!!!!! Talk about cutting down on a big makeup bag, obsessssed
Lois L. 5/5
Where has Underwear been all my life? I wear it every single day, without fail. It's glowy without looking oily, makes my skin look so fresh and hydrated - but also STUNNING under makeup. 10/10 product, obsessed isn't even the word.
Ciara B. 5/5
It's my new favourite skin care. with or without makeup I have this flawless glow from within. It blurs my skin so seamlessly but still breathable. Since wearing it my makeup has lasted so much longer through the day all the way into the night. 10's 10's 10's accross the board !!!
Rachel D. 5/5
Absolutely LOVE this product!!! It makes your skin so hydrated and makeup glides on after. I wear it alone, and I have noticed when I do wear make-up with it, it lasts much longer than usual. LOVE LOVE LOVE
Dee 5/5
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