A great hydrating serum should do more than just sit on the surface—it should absorb quickly, layer seamlessly and actually change the way your skin looks and feels over time. Finding one that delivers on all counts? That’s the hard part. For a growing number of NewBeauty readers, the search is over.
In a recent skin-care survey of more than 550 NewBeauty readers,* we asked them all about their hydration favorites—and one product came out on top: the Alastin HA IMMERSE Serum.
The serum is built around a proprietary Octapeptide-45, which helps the skin naturally increase its own high-molecular hyaluronic acid production, delivering both instant and long-term plumping, anti-aging and hydration benefits. It also contains silver ear mushroom extract to encourage surface hydration, plus a trio of natural sugar compounds that further enhance the skin’s own production of hyaluronic acid. Unlike some HA formulas, this one’s lightweight, fast-absorbing and layers effortlessly under moisturizer and makeup.
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Our readers are feeling the difference. A 53-year-old said it “works like magic,” while a 58-year-old noted her skin feels “hydrated and plumped up.” A 38-year-old shared that skin feels instantly softer right after applying, and a 36-year-old praised the lightweight, no-fuss formula—no scent, quick absorption and easy layering. A 77-year-old said her skin feels plump and radiant and loves that it contains peptides. A 33-year-old put it simply: “best product ever.”
With results that show up fast and keep improving over time, it’s easy to see why this serum has earned such a devoted following.
Source: BeautyEngine Advanced Research, 2026
