Vichy Mineral 89 Booster Hyaluronic Acid Serum

What it is

Vichy Mineral 89 is a lightweight hydrating booster built around hyaluronic acid and Vichy's signature Mineralizing Thermal Water, which makes up 89% of the formula — giving the product its name. It layers easily under moisturizer or SPF and is formulated without fragrance, making it one of the more versatile hydrating serums on the market. With a 4.6-star rating across nearly 47,000 reviews, it has earned a sustained, well-documented following among shoppers with a wide range of skin types.

Who it's for

This serum suits most skin types, including dry, combination, oily, and sensitive skin. It's particularly well-matched for anyone dealing with dehydration — that tight, dull, slightly rough feeling that shows up even in oily skin when the moisture barrier is compromised. Because it's fragrance-free and formulated with a short, minimal ingredient list, it's also a reasonable option for reactive or post-procedure skin that can't tolerate more aggressive actives.

Who should skip it: If your primary concern is hyperpigmentation, fine lines, or acne, this serum alone won't address those issues — hyaluronic acid hydrates but doesn't brighten, resurface, or clear breakouts. It works best as a supporting player in a more complete routine, not as a standalone corrective treatment.

How to use it

Apply Mineral 89 to clean, slightly damp skin — pressing a few drops into the face and neck before your moisturizer. Hyaluronic acid draws moisture from the environment and from the surface of the skin, so applying it to damp skin and sealing it in with a cream or lotion immediately after gives it the best chance to work. It can be used morning and evening. In routine order, it sits after any water-based toners or essences and before heavier creams or facial oils. Its thin, gel-like texture absorbs quickly and doesn't pill under sunscreen, which makes it practical for a daytime routine.

Key ingredients

Hyaluronic acid is a glycosaminoglycan — a naturally occurring molecule in skin tissue that holds water and maintains the plumpness of the extracellular matrix. As a topical ingredient, it works as a humectant, pulling moisture to the surface layers of the skin. Formulas that include multiple molecular weights of hyaluronic acid can deliver both surface hydration and slightly deeper moisture retention; Vichy's version incorporates HA in a way that produces a smoothing, plumping effect on the skin's appearance over consistent use.

Vichy Mineralizing Thermal Water is rich in 15 minerals including calcium, magnesium, and manganese. While thermal waters are not active treatments in the same way that retinoids or exfoliating acids are, the mineral content is associated with skin-barrier support and soothing properties — which is why Vichy has built their brand identity around it. It serves as a conditioning base that contributes to the serum's mild, well-tolerated profile.

Pros & cons

• Fragrance-free and well-tolerated by sensitive skin
• Lightweight texture that layers without pilling or tackiness
• Works across skin types, including oily and combination
• Nearly 47,000 reviews with a 4.6-star average — a meaningful indicator of broad satisfaction
• Short, minimal ingredient list with low irritation risk

• Does not address pigmentation, texture, or acne on its own
• Hyaluronic acid can feel drying in very low-humidity environments if not sealed with a moisturizer
• Offers no SPF protection — a separate sunscreen is still required
• Those seeking visible corrective results may need to pair it with additional actives

How it compares

If dehydration is your only concern, Mineral 89 is hard to fault. But shoppers looking to tackle both dullness and dryness in a single step might consider Tree of Life Hyaluronic Acid Serum for Face, which uses a similar humectant base at a more accessible size point for those who want to test a HA-first routine before committing. For shoppers willing to add a brightening active into the mix, TruSkin Vitamin C Serum with Hyaluronic Acid & Vitamin E combines HA's hydrating function with vitamin C's ability to address uneven tone — useful if dullness is as much of a priority as dryness.

The verdict

Vichy Mineral 89 does what it promises: it hydrates, calms, and creates a smoother surface for whatever comes next in your routine. It's not a treatment serum and it doesn't pretend to be. For someone who needs a fragrance-free, low-risk hydration step — especially with sensitive or compromised skin — it's a dependable choice with a large body of shopper experience behind it. Layer it correctly (damp skin, sealed with moisturizer), pair it with targeted actives for any specific concerns, and it earns its place in a straightforward, well-built routine.