The KateCeuticals range from Kate Somerville might just be my favourite offering from the brand. Though I admit, it’s tough to play favourites when so many of their products hold a permanent spot in my routine. What sets this line apart is its focus on peptides, an ingredient I consider an excellent investment for any skin type. Peptides are beautifully gentle, making them suitable for everyone, and they deliver results without the risk of irritation. The Kate Somerville KateCeuticals Firming Serum is case in point of that.
What is it?
A hydrating, brightening and firming serum.
What Do I Think?
For the uninitiated, peptides are short chains of amino acids. They are the building blocks of proteins like collagen. By applying peptides topically, you stimulate the skin’s natural collagen production, which inevitably slows as we age. It’s a clever, preventative approach to keeping wrinkles at bay and maintaining firmness and elasticity.
The KateCeuticals Firming Serum is a standout product in the range. Its Tri-Peptide + Hyaluronic Acid Complex visibly softens fine lines while delivering a serious dose of hydration. The formula is bolstered by botanicals like Nasturtium Flower and Mukul Myrrh Extract to plump and smooth the skin while strengthening its barrier. Add in antioxidant-rich Vitamin E for protection and nourishment, and Pea Extract to boost firmness and elasticity, and you’ve got a formula that reads like a love letter to youthful, resilient skin.
I like to use this serum every other night, alternating with retinol. It’s one of those rare products that delivers tangible results. I notice smoother, plumper, clearer skin that looks undeniably better. If I’ve got an event or special occasion on the horizon, I’ll start using this in the lead-up for a noticeable boost. It genuinely makes my skin look and feel more youthful, like it’s had a good night’s sleep even when I haven’t.
While the Firming Serum works beautifully on its own, layering it with the Total Repair Cream takes the results to another level entirely. Together, they form a powerhouse duo that leaves skin feeling deeply nourished, firmer, and more radiant. If you’re serious about skincare that truly performs, this range is absolutely worth exploring.

Would I recommend?
Yes. I’ve used this and repurchased it many times which speaks for itself.
Brands Product Description
Put dull skin in your rearview with our clinic-grade Kate Somerville KateCeuticals Firming Serum. You’ll see smoother texture and improved skin firmness within 2 weeks. The Tri-Peptide + Hyaluronic Acid Complex softens the appearance of fine lines and visibly minimizes even the deepest wrinkles. Botanicals like Nasturtium Flower + Mukul Myrrh Extract work to plump and smooth the skin’s appearance while strengthening the skin barrier.
Key Ingredients
- Tri-Peptide + Hyaluronic Acid Complex – Decreases the appearance of wrinkles while increasing skin firmness & elasticity.
- Hyaluronic Acid + Mukul Myrrh Extract – Work to hydrate, plump & smooth the skin’s appearance.
- Nasturtium Flower – Provides a boost of Oxygen to help strengthen the skin barrier, smooth texture & brighten dull-looking skin.
- Vitamin E – Provides antioxidant benefits to nourish, soothe & defend against free radical damage.
- Pea Extract – Helps improve firmness, elasticity & moisturization.

How I Use It
I use this morning and night after cleansing, and before moisturiser.
Would I Repurchase/Buy?
Yes! As mentioned above, I’ve already repurchased multiple times.
How Much?
£96.00 for 30ml