Solution Exfoliating Skin Perfector
Triple-Acid Texture Reset
Pros & cons.
- +Intelligently formulated AHA/BHA/PHA triple-acid blend provides multi-depth exfoliation
- +Niacinamide inclusion supports barrier recovery and prevents post-exfoliation hyperpigmentation
- +Visible texture and brightness improvement within the first week of use
- +Salicylic acid component addresses pore congestion that AHAs alone cannot reach
- +Fragrance-free in the current reformulation — unusual for this product category
- +Fungal acne safe with no comedogenic or malassezia-feeding ingredients
- +Good value at $24 for 4.4 oz — lasts 3-4 months with regular use
- −10% acid concentration is too aggressive for sensitive, dry, or compromised skin
- −Initial tingling and potential purging period can be alarming for first-time acid users
- −Cotton pad application wastes a significant amount of product per use
- −Must be paired with diligent daily sunscreen — AHAs increase photosensitivity substantially
- −Cannot be used on the same evening as retinoids or other exfoliating acids
The full review.
For three years, Glossier had a very clear identity: gentle products for people who wanted their skin to look effortlessly good without the intimidation of clinical skincare. Then, in January 2018, the brand released a product with a 10% acid concentration and the word ‘exfoliating’ in the name, and the entire Glossier community had to recalibrate its assumptions. Solution was a declaration that the brand could play in treatment territory without abandoning its approachable aesthetic, and seven years later, the product has proven that thesis more convincingly than anyone — including Glossier — probably expected.
The formulation is the most interesting thing about Solution, and it deserves a close look. Instead of relying on a single acid at high concentration, the formula distributes its 10% total acid content across three distinct hydroxy acid families. Glycolic acid, the smallest AHA molecule at just 76 daltons, penetrates deepest into the stratum corneum to disrupt dead cell adhesion at levels other acids cannot reach. Lactic acid, larger at 90 daltons, works the middle layers while pulling double duty as a humectant — an unusually thoughtful inclusion that prevents the formula from being entirely dehydrating. And gluconolactone, the PHA representative, handles the outermost surface with its large molecular structure, providing exfoliation gentle enough to be tolerated even by the skin that the glycolic might otherwise overwhelm.
Then there is the salicylic acid at 0.5%. As the only oil-soluble acid in the mix, BHA can penetrate into the sebum-filled pore lining — something no AHA or PHA can do. At half a percent, it is working quietly but persistently, dissolving the plug of dead cells and sebum that causes blackheads and closed comedones. The concentration is low enough to avoid the dramatic peeling that higher BHA products cause, but high enough to make a measurable difference in pore congestion over four to six weeks of regular use.
Niacinamide rounds out the active cast, and its inclusion is the detail that separates Solution from a generic acid toner. Niacinamide inhibits melanosome transfer, which means it helps prevent the post-inflammatory hyperpigmentation that often follows acid-accelerated cell turnover. It also supports ceramide synthesis — effectively helping the barrier repair itself even as the acids are deliberately disrupting the surface. This is not an ingredient afterthought; it is a design choice that makes the entire formula more sustainable for long-term use.
In practice, Solution is simple to use and rewarding quickly. Dispense onto a cotton pad, swipe across the face, and wait. The tingling arrives within seconds — a fizzy, prickly sensation that announces the acids are at work. For first-time users, this can feel alarming, but it subsides within two to three minutes and diminishes significantly with regular use as the skin acclimates. By the next morning, the results are already visible: smoother texture, a subtle brightness, pores that appear slightly tighter. After two to three weeks of consistent every-other-night use, the cumulative effect is genuinely impressive — skin that looks clearer, more even, and more refined than it did before.
The honest caveats are important. This is a 10% acid blend with glycolic acid — one of the most potent AHAs available — and it is not suitable for everyone. Dry skin will feel drier. Sensitive skin will likely react with redness, stinging, or irritation that goes beyond normal tingling. Compromised skin barriers will worsen. The cotton pad application method, while intuitive, wastes a non-trivial amount of product with each use — the pad absorbs liquid that never reaches the skin. And the fall-winter recommendation for starting acid exfoliants is worth heeding, since the increased photosensitivity from AHAs makes summer introduction riskier.
The pricing sits comfortably in the mid-range for acid exfoliants. Twenty-four dollars for 4.4 ounces of a leave-on treatment is fair — significantly less per ounce than premium acid toners from brands with comparable ingredient profiles, and the bottle lasts three to four months with regular use. The current reformulation removed fragrance, which the original formula included, making it a genuinely fragrance-free option in a category where unnecessary scent additions are common.
Solution represents something interesting about Glossier as a brand. It proved that a company known for no-makeup makeup and gentle serums could formulate a serious treatment product, and that its audience — people who might have been intimidated by acids from clinical brands — could be brought into the fold with the right packaging, communication, and brand trust. The formula itself is genuinely good: the multi-acid approach is smarter than a single-acid blast, the niacinamide is a meaningful addition, and the results are real. For oily to combination skin dealing with texture, congestion, and dullness, Solution remains one of the most accessible entry points into serious chemical exfoliation.
Formula
Ingredient analysis.
Full INCI list
Water/Aqua/Eau, Sodium Hydroxide, Lactic Acid, Glycolic Acid, Gluconolactone, Propanediol, Pentylene Glycol, Magnesium Chloride, Glycerin, Salicylic Acid, Niacinamide, Aloe Barbadensis Leaf Juice, Ethylhexylglycerin, Citric Acid, Phytic Acid, Polysorbate 20, Amylopectin, Polydextrose, Dextrin, Caprylyl Glycol
Skin match.
The science.
The Science
Solution's exfoliating strategy uses known differences in hydroxy acid molecular size and solubility. Glycolic acid (76 Da) has the smallest molecular weight of all AHAs and penetrates deepest into the stratum corneum. A 1996 study by Van Scott and Yu in the Journal of the American Academy of Dermatology showed that glycolic acid efficacy depends on concentration and pH, with regular use increasing epidermal thickness and collagen deposition.
Lactic acid (90 Da) works differently. Its larger molecular size limits penetration depth compared to glycolic acid, but it has humectant properties that glycolic acid lacks. A 2024 review in the Indian Journal of Dermatology confirmed lactic acid peels cause significantly lower irritation than glycolic acid at equivalent concentrations, making it a good partner in a multi-acid formula.
Gluconolactone, the PHA component, is the gentlest exfoliant. A study by Edison et al. in the Journal of Cosmetic Dermatology found PHAs provide comparable exfoliation to AHAs with much less stinging and irritation. This comes from their larger molecular size (178 Da for gluconolactone) and extra humectant and antioxidant chelating properties.
The 0.5% salicylic acid uses a different exfoliation pathway. As a lipophilic BHA, it dissolves in sebum and enters the lipid-rich pore lining—a space water-soluble AHAs cannot reach. This makes it effective against comedonal acne, where sebum-dead cell plugs form the primary lesion.
Niacinamide is strategically placed. A 2005 study by Hakozaki et al. in the British Journal of Dermatology showed 5% niacinamide significantly reduced hyperpigmentation after 8 weeks by inhibiting melanosome transfer from melanocytes to keratinocytes. In an acid exfoliant that speeds cell turnover, niacinamide helps prevent the darkening that can occur during exfoliation in melanin-rich skin types.
References
- Lactic Acid Chemical Peeling in Skin Disorders — Indian Journal of Dermatology (2024)
- The effect of niacinamide on reducing cutaneous pigmentation and suppression of melanosome transfer — British Journal of Dermatology (2002)
Dermatologist Perspective
Dermatologists view the AHA/BHA/PHA approach as a sophisticated strategy that covers more ground than any single acid alone. Board-certified dermatologists often recommend introducing multi-acid products gradually—starting 2-3 times per week and building tolerance over 4-6 weeks. Clinicians note the 0.5% salicylic acid is a conservative concentration, yet sufficient to maintain pore clarity and manage mild comedonal acne. The niacinamide inclusion supports barrier recovery during active exfoliation. Dermatologists emphasize that daily broad-spectrum sunscreen SPF 30+ is non-negotiable when using AHA-containing leave-on products, because glycolic acid significantly increases UV sensitivity.
Where it fits in your routine.
Apply a small amount to a cotton pad and sweep across clean, dry skin at night. Avoid the eye area, lips, and broken skin. Wait 1-2 minutes before applying subsequent products (serum, moisturizer). Use 2-3 times per week initially, then increase frequency as tolerated. If using in the morning, apply broad-spectrum SPF 30+ afterward. Do not use with retinoids, other acid exfoliants, or vitamin C serums on the same evening. If redness, burning, or dryness persists, reduce frequency or stop use.
At $24 for 4.4 fl oz, Solution offers good value for a multi-acid leave-on exfoliant. The large bottle lasts three to four months with every-other-day use, making the per-use cost under a dollar. Solution costs less per ounce than clinical acid toners from dermatologist-developed brands and has a comparable active acid profile. Cotton pad application wastes some product, but the overall cost-effectiveness remains reasonable. With eight years of market history and Leaping Bunny certification, the price reflects fair value instead of a brand premium.
Oily to combination skin with texture, enlarged pores, blackheads, post-acne dark marks, or dullness. This works for anyone wanting one exfoliant to treat surface texture and pore-level congestion. It suits users with experience using active skincare ingredients or beginners who introduce them slowly.
People with sensitive, dry, or eczema-prone skin. Those with a compromised skin barrier or active rosacea. Pregnant or nursing individuals (contains salicylic acid). People using prescription retinoids or strong leave-on AHAs who do not want to alternate. Anyone who will not use daily sunscreen.
Product details.
Unscented in the current reformulation. No added fragrance.
Glass bottle with a dispensing cap. The current version uses Glossier's signature pink tones. Apply by dispensing onto a cotton pad.
Expect tingling or slight stinging on first use; this is normal for a 10% acid blend. The sensation lasts 1-3 minutes and fades as skin acclimates with regular use. Some users see mild redness immediately after application. Skin feels smoother the morning after the first use. Acne-prone skin may experience purging (temporary increase in breakouts) during the first 1-2 weeks.
3-4 months with every-other-day evening use
12 months
fall winter
The backstory.
Launched in January 2018, Solution was Glossier's boldest skincare move — a 10% acid exfoliant from a brand known for gentle, low-intervention products. The product reflected a strategic expansion beyond the 'your skin but better' philosophy into genuine treatment territory. Its AHA/BHA/PHA blend was inspired by dermatological approaches to chemical peels, scaled down to daily-use concentrations.
About Glossier
Established Brand (5–20 years)Emily Weiss founded Glossier in 2014, stemming from the beauty blog Into The Gloss. The brand is Leaping Bunny certified cruelty-free. Glossier uses direct-to-consumer sales and community-driven product development to build its following, but lacks clinical or dermatologist-developed origins.
Common myths.
Tingling shows the product works; no tingle means it is not effective.
Tingling shows acid activity on the skin, but sensation level does not correlate with efficacy. As skin acclimates to regular acid use, tingling decreases while exfoliating benefits continue. Persistent burning or pain — unlike mild tingling — shows the formula is too strong for your skin and requires discontinuation.
Use chemical exfoliants daily for best results.
Apply Solution's 10% acid blend every other day or 3-4 times per week, especially at first. Daily use of strong acids damages the skin barrier, causing sensitivity, dehydration, and worse texture. Consistent, less frequent use gives better long-term results.
FAQ.
How often should you use Glossier Solution?
Use Solution every other evening. Increase to nightly use if your skin tolerates it. Most dermatological guidance recommends introducing acid exfoliants slowly—start with 2-3 times per week for the first two weeks. Do not use Solution in the morning without SPF 30+ afterward, as AHAs increase UV sensitivity.
Can you use Glossier Solution with retinol?
Do not use them on the same evening. Both products exfoliate and can compromise the skin barrier if combined. Alternate them—use Solution on Monday, Wednesday, and Friday evenings and retinol on Tuesday and Thursday evenings. If you experience irritation, use both less often.
Will Glossier Solution make you purge?
Purging happens if you have acne-prone skin or subsurface congestion. The BHA (salicylic acid) pushes existing clogs to the surface faster, causing breakouts for the first 1-2 weeks. If new breakouts last beyond 4-6 weeks, the product causes irritation instead of purging; stop use.
Is Glossier Solution too strong for sensitive skin?
Yes, for most sensitive skin types. The 10% total acid concentration contains glycolic acid—the smallest, most penetrating AHA—which causes irritation on reactive skin. If you have sensitive skin but want chemical exfoliation, use PHA-only products or low-concentration lactic acid formulas as gentler starting points.
Does Glossier Solution help with acne scars?
Its AHA exfoliation and niacinamide content helps post-inflammatory hyperpigmentation (the dark marks left after acne heals). It does not improve atrophic (pitted) acne scars; those require professional treatments like microneedling, laser resurfacing, or dermal fillers. For dark marks, consistent use over 8-12 weeks shows measurable improvement.
Is Glossier Solution safe during pregnancy?
No. The formula contains salicylic acid, a BHA related to aspirin. Many dermatologists consider the 0.5% topical concentration low-risk, but most obstetric guidelines recommend avoiding salicylic acid products during pregnancy as a precaution. Consult your OB-GYN before using any acid exfoliant while pregnant or nursing.
What the community says.
"Visible brightening and texture improvement within the first week"
"Effectively addresses blackheads and pore congestion"
"Lightweight liquid format is easy to apply"
"Fragrance-free in current reformulation"
"Stings or burns on application, especially initially"
"Too strong for sensitive or dry skin types"
"Adjustment period with potential purging"
"Cotton pad application wastes product"
People also looked at.