Marks & Spencer's beauty aisle is buzzing with excitement as shoppers clamour to get their hands on a treatment that's gained a huge following. The Retinol Reboot Exfoliating Body Treatment by Alpha H has been praised for its remarkable effects on saggy skin, particularly in the décolletage area.

This overnight sensation promises to reveal smoother, plumper, and more radiant skin by morning. Tailored for the body but gentle enough for the delicate neck region, the M&S gem harnesses the power of retinol and glycolic acid to even out skin tone, combat redness, and diminish fine lines and crepiness.

Although it hasn't racked up reviews on the M&S website just yet, the product boasts an impressive 4.8 out of 5 stars from 212 reviews on the brand's own site, with a whopping 95% of customers recommending it.

One satisfied customer shared: "The product was easily absorbed and went a long way. I only used on the neck area which is a concern for me with uneven skin tone and fine lines. The product gave hydration to the area and reduced redness."

A second person said: "Loved the smell of the product and it felt really nice going on, soaked into the skin quickly and really well, not sticky at all. I noticed after two uses my skin felt a lot softer and no more dryness. I loved the slight tingles when putting it on, feeling the product working instantly is amazing. The bumps on my back went down, and no more itchy feeling, my back feels well hydrated and nourished. Skin is more even and less red and inflamed, also more glowy since using this product."

A third chimed in: "Luxurious body exfoliating treatment that works using natural ingredients rather than abrasive scrubs. I use it on my body at night and wake up with soft, supple skin that feels smooth and luxurious and ready to be moisturized."

Another shopper said: "I have been using this for two weeks now on my neck, chest and thighs. My pigment from sun damage has started fading already!"

Not all reviews were glowing, however, as one disgruntled shopper reported: "Disappointed! The texture is great and I like the smell, but it gave me a rash on my chest, so I’m using it on my arms instead."

It's crucial to conduct patch tests before fully embracing new skincare products. Among competing items seeking to rejuvenate skin for a youthful, radiant glow is the Peter Thomas Roth FIRMx Cellulite Cream, retailing at £48.50 on LookFantastic, which promises to eliminate bumps within a fortnight.

Face Theory also offers their Co-enzyme Firming Neck & Décolleté Serum, which utilises ceramides and enzymes to provide a smoother appearance. It's priced at £25 for a 30ml bottle. Meanwhile, a 120ml bottle of Alpha-H's Retinol Reboot Exfoliating Body Treatment is available for £32 at M&S.