Is your dry skin dulling your sparkle?
Imagine a silky SPF 30 primer that floods your skin with hydration while shielding it from daily UV exposure.
Smooth, supple and luminous - this is the glow-boosting prep step you’ll never want to skip.
SOSU Underwear Hydrating Base SPF30
Meet your everyday skin armour!
Underwear Hydrating Base SPF30 is made for dry skin – drenching thirsty skin with moisture while shielding it with broad-spectrum protection. The result? A smooth, hydrated base that helps foundation glide on and last beautifully.
Lightweight and silky, it melts in without heaviness, instantly calming redness, brightening dullness and evening tone.
Fresh, smooth, radiant skin… like you’ve hit the glow reset button.
What makes this primer so unique?
This isn’t about mattifying or masking skin - it’s about moisture first.
Underwear Hydrating Base cushions and hydrates before anything else, smoothing uneven texture and softening dehydration lines so foundation applies seamlessly.
And with built-in SPF30, it shields your skin from everyday UV exposure while you wear it, so your glow isn’t just perfected, it’s protected.
Daily UV Defence Trio
Octinoxate, Uvinul A Plus and Tinosorb S team up to give your skin serious UVA and UVB protection. Together, they help prevent sun-damaged skin from worsening dryness, protect collagen, and keep your complexion looking smoother, firmer, and more even without that tight, parched feeling.
Vit E + Prickly Pear Extract
This antioxidant-rich duo helps defend against daily environmental stress while drenching dry, sun-exposed skin in soothing hydration. Together, they calm, strengthen and replenish, leaving your complexion comforted, resilient and glowing with healthy balance.
Hydration. Defence. Flawless base… one effortless step.
And that’s not all…
Wear it alone when your dry skin needs a dewy pick-me-up, or under foundation for that smooth, glowy, protected base you’ve always wanted. It keeps skin feeling comfortable and hydrated while giving you that healthy, lit-from-within finish.
Pop it in your bag, and you’ve got hydration and SPF30 on hand whenever your glow needs a boost.
Underwear Hydrating Base - finally, a primer that actually understands dry skin.
Results to expect
- Deeply hydrated, comfortable skin that feels soft and supple all day
- SPF30 protection that shields against daily sun damage
- Instantly smoother texture, so foundation glides on seamlessly
- Reduces redness, brightens & evens skin tone
- A fresh, radiant glow that makes your complexion look healthier
- Reduced patchiness and improved make-up longevity
- A breathable, lightweight finish that never feels heavy or greasy
Key ingredients
- Octinoxate is a UVB filter that protects dry skin from sun damage, which can worsen dehydration and uneven tone
- Uvinul A Plus is an advanced UVA filter that helps defend collagen, preserving firmness and elasticity
- Tinosorb S is a photostable broad-spectrum filter that provides long-lasting UVA and UVB protection to reduce moisture loss
- Glycerin is a powerful humectant that attracts and locks in moisture for plumper, more comfortable skin
- Panthenol soothes and strengthens the skin barrier to reduce tightness and support resilience
- Vitamin E + Prickly Pear Stem Extract calm, hydrate and reinforces dry or sun-stressed skin
SIZE: 40ml / 1.41 fl. Oz.
About the brand: SOSU Cosmetics
SOSU Cosmetics was created by Suzanne Jackson, makeup artist, beauty influencer, and one of Ireland’s most fearless beauty entrepreneurs. Since launching in 2015, SOSU has become a go-to for glam lovers, offering cruelty-free, high-performance makeup, skincare, and tanning essentials. With Suzanne’s passion and expertise at the heart of it all, the brand empowers you to glow harder, slay louder, and own your beauty with confidence.
About Beauty and the Boutique
Beauty and the Boutique is a proudly independent, online-only beauty destination where you’ll only ever find products you can truly trust. Every item is hand-picked by makeup artist Katie Clement-Lorford based purely on performance, quality, and how it makes you feel - never because a brand has paid for it to be featured. There are no sponsored listings, no paid placements - just Katie’s genuine beauty favourites. Every product is selected with care and never tested on animals, so you can trust that what you see is what Katie truly believes in. With thousands of five-star reviews from customers around the world, we’re here to make beauty simple, uplifting, and truly trustworthy.
Why Shop with Beauty and the Boutique?
- Worldwide Shipping - We deliver to over 100 countries
- Cruelty-Free Products - Nothing we sell is ever tested on animals
- Makeup Artist Approved - Every product is tried, tested, and loved by Katie
- Free How-To Guides - Step-by-step help included with your order
- You're Giving Back - We plant a tree and support global charities with every purchase
- 20% Off When You Buy 3 - Use gift code 20 at checkout
- Rated Excellent on Trustpilot - Trusted by thousands of happy customers
- Top Quality Store on Google Shopping - Verified and reliable
- Trusted Worldwide – Customers in over 100 countries shop with us
- What’s more, you’ll get free beauty, makeup, and skincare advice from Katie. And if you have any questions, our friendly team - expertly trained by Katie herself - will reply within 24 hours.
About Makeup Artist Katie
Katie Clement-Lorford is the founder of Beauty and the Boutique and her own makeup line, Love Katie. With over 25 years’ experience as a professional makeup artist, Katie has worked with real women of all ages, skin tones, and confidence levels — and now brings that expertise directly to you. At Beauty and the Boutique, Katie personally hand-picks and approves every product based on performance, quality, and how it makes you feel. For many consecutive years running, Katie Clement-Lorford has been a UK beauty awards judge. She’s also a passionate advocate for kindness, simplicity, and feel-good beauty that truly works.
