When it comes to skincare, the potent formulas from Medik8 are hard to beat. One particular serum duo I use has been reduced in the beauty brand's limited-time 20% off sale.

I've been using the two products in recent months to achieve brighter complexion and smoother skin, and I'm so impressed with the results, I'm considering rebuying them.

I use Medik8's C-Tetra Lipid Vitamin C Serum in the morning on dry, clean skin to brighten and correct hyperpigmentation, and apply Crystal Retinal 3 Vitamin A Serum at night to reduce the look of fine lines and wrinkles.

The duo would usually cost me £88 in total but with the 20% off deal, I can save £18 and get them for £70.40 instead. The discounts are automatically applied at checkout and are available until Monday, March 3 at 9am.

The C-Tetra Serum is packed with a stabilised form of vitamin C to iron out the look of fine lines and wrinkles. I enjoyed using it after my toner and apply before going in with a face cream and sunscreen.

My previous skin consultation pointed out a few pigmentation marks on my cheeks, so I was hoping to get rid of the "freckle look" and correct the dark spots when UV levels were comparatively low. When using vitamin C, always remember to follow with sunscreen for defence against environmental aggressors. I like to use the Biore Aqua Rich Watery Essence Sunblock SPF50 that's reduced on Amazon to £11.90 from £12.50.