
Highlights
WHAT IS IT?
Facial Lactic Acid Serum with 10% Lactic Acid
FEATURES
Gentle leave-on chemical exfoliator, resurfaces dull/rough skin, powered by lactic acid, fades pigmentation and dark spots, smooths fine lines, nourishing hydrating base, non-drying and irritation-free, leaves skin soft and plump
BEST FOR
sensitive
CHECKS
Does not cause dryness or irritation
Who Is It For?
What Does It Help With?
Dullness Uneven Skin Tone Pigmentation Dark Spots Fine Lines Rough SkinBudget
Affordable (under $30)How To Use
Which routine should it be used in?
Instructions:
Key Information
What The Formularx Says
Product Description:
The Formularx Air Brush Facial Lactic Acid Resurfacing Serum is a gentle leave-on chemical exfoliator that resurfaces dull skin and removes dead skin cells to reveal an instant glow and improved skin texture. Ideal for dull, rough, or uneven skin types. Powered by lactic acid, this serum helps fade pigmentation, dark spots, and uneven skin tone while visibly smoothing fine lines and wrinkles. Formulated in a nourishing, hydrating base, it delivers a dewy, radiant finish without causing dryness or irritation. Skin feels soft, plump, and refreshed from the first use. Pair it with Barrier Relief, Barrier Plus, or Hydraveil Moisturizer to lock in hydration and strengthen your skin barrier post exfoliation.
About the Brand:
Ingredients Overview
Ingredients List
Water, Lactic-Acid, Caprylic/Capric-Triglyceride, Gluconolactone, Glycerin, Cetearyl-Alcohol, Sodium-Hydroxide, Cetearyl-Olivate, Sorbitan-Olivate, Phenoxyethanol, Agastache-Mexicana-Flower/Leaf/Stem-Extract, Disodium-Edta, Xanthan-Gum, Ethylhexylglycerin
Key Ingredients
Lactic Acid 10%
Ingredients Details
Ethylhexylglycerin
Common Name(s): Octylglycerin,2-ethylhexyl glycerol ether,sensiva sc 10
CAS Number: 70445-33-9
DESCRIPTION
What It Does: Provides antimicrobial skin conditioning with deodorant activity and preservation system enhancement.
Why It's Used: Multifunctional clean beauty preservation active โ ethylhexylglycerin provides antimicrobial, deodorant, and skin conditioning in a single ingredient accepted in most natural cosmetic certification schemes.
How It Works: Glycerol ether provides antimicrobial via bacterial membrane phospholipid disruption. deodorant activity via reduction of underarm lipase enzyme activity (similar mechanism to triethyl citrate). skin conditioning from glycerol humectant component. synergistic with phenoxyethanol and diols.
Typically Found In: Natural preservation systems,deodorants,skin conditioning products
TECHNICAL DETAILS
Primary Category: Functional ingredient โ antimicrobial glycerol ether
Secondary Functions: Skin conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.1%โ0.5%
SOURCING & ETHICS
Vegan Status: Yes โ synthetic
Halal Status: Yes
Source Notes: Commercially produced for cosmetic use. verify vegan/halal status with supplier.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Well-tolerated by most skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Good safety profile at recommended concentrations. ewg score: 1โ2.
Works Well With: Standard skincare actives
Avoid Combining With: No known significant incompatibilities
SCIENTIFIC NOTE
Ethylhexylglycerin's deodorant mechanism is pharmacologically identical to triethyl citrate: both inhibit skin surface microbial lipase enzymes that convert odourless triglycerides to odorous free fatty acids. the glycerol ether structure of ethylhexylglycerin, combined with the 2-ethylhexyl chain, provides lipase inhibition similar to ester-based lipase inhibitors from a different chemical class.
Last Verified: Cosing database,schรผlke sensiva sc 10 technical data,cir safety assessment
Primary Sources: 2026-03-12
Gluconolactone
Common Name(s): D-gluconolactone,delta-gluconolactone
CAS Number: 90-80-2
DESCRIPTION
What It Does: Provides the gentlest chemical exfoliation with simultaneous antioxidant, moisture retention, and barrier support.
Why It's Used: Preferred exfoliant for rosacea, eczema, sensitive skin, and post-procedure recovery where standard ahas cause unacceptable irritation.
How It Works: Hydrolyzes slowly on skin surface to gluconic acid providing gentle exfoliation. multiple hydroxyl groups enable water binding (humectant) and metal chelation (antioxidant).
Typically Found In: Sensitive skin exfoliants,rosacea treatments,eczema care,post-procedure recovery
TECHNICAL DETAILS
Primary Category: Active ingredient โ polyhydroxy acid (pha)
Secondary Functions: Gentle exfoliation,antioxidant,humectant
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 5%โ15%
SOURCING & ETHICS
Vegan Status: Yes โ fermentation or synthetic
Halal Status: Yes
Source Notes: Fermentation-derived from glucose or synthetic. among the safest chemical exfoliants available.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: No photosensitization; no stinging; suitable for very sensitive skin.
Safe for Sensitive Skin: Yes โ ideal for sensitive, reactive, rosacea, and eczema-prone skin; no photosensitization
SAFETY & COMPATIBILITY
Safety Profile: Exceptional safety profile. no photosensitization. ewg score: 1.
Works Well With: Ceramides,niacinamide,hyaluronic acid,soothing actives
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Phas have molecular weights 2โ3ร larger than ahas, limiting penetration to superficial layers. combined humectant and antioxidant properties make them uniquely well-tolerated while providing meaningful exfoliation.
Last Verified: Cosing database,green & yu (2003) pha review,cir safety assessment
Primary Sources: 2026-03-12
Glycerin
Common Name(s): Glycerol,glycerine,1,2,3-propanetriol
CAS Number: 56-81-5
DESCRIPTION
What It Does: Glycerin pulls water from the environment and deeper skin layers into the outer skin layer (epidermis), boosting moisture levels and keeping skin soft, smooth, and plump.
Why It's Used: It is used in virtually every moisturizer, serum, and cleanser because it is highly effective at hydrating skin, is well-tolerated by all skin types, and enhances the texture and spreadability of formulations.
How It Works: As a humectant, glycerin forms hydrogen bonds with water molecules, trapping them in the skin. it also reinforces the skin barrier by integrating into lipid structures between skin cells.
Typically Found In: Moisturizers,serums,cleansers,toners,sheet masks,sunscreens,body lotions,shampoos,conditioners
TECHNICAL DETAILS
Primary Category: Humectant
Secondary Functions: Skin barrier support,emollient,solvent
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ30% (typical: 3โ10%)
SOURCING & ETHICS
Vegan Status: Yes โ plant-derived (coconut, soy, palm) or synthetic
Halal Status: Yes โ when plant-derived or synthetic; verify source with supplier
Source Notes: Derived from plant oils via hydrolysis or saponification; synthetic versions also available. palm-derived glycerin carries sustainability concerns.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low; non-irritating at all standard concentrations
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Extremely rare allergic reactions; generally safe for all skin types including sensitive and baby skin
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Widely recognized as safe. ewg hazard score: 1. no significant concerns for irritation, sensitization, or toxicity at typical concentrations (up to 50%).
Works Well With: Hyaluronic acid,ceramides,niacinamide,panthenol,urea,peptides,retinol,ahas/bhas
Avoid Combining With: No known incompatibilities at standard concentrations
SCIENTIFIC NOTE
Glycerin is an endogenous skin component found naturally in the stratum corneum. aquaporin-3 channels in keratinocytes facilitate glycerin transport, making it integral to natural skin hydration pathways.
Last Verified: Cosing database,cir safety assessment,ewg skin deep,inci decoder
Primary Sources: 2026-03-12
Phenoxyethanol
Common Name(s): 2-phenoxyethanol,rose ether,ethylene glycol monophenyl ether
CAS Number: 122-99-6
DESCRIPTION
What It Does: Prevents microbial contamination and spoilage in cosmetic formulations.
Why It's Used: The benchmark cosmetic preservative โ eu-permitted up to 1%, effective against virtually all cosmetically relevant microorganisms, and excellent tolerability.
How It Works: Phenol ring provides broad antimicrobial activity via disruption of bacterial and fungal cell membranes and inhibition of enzymatic activity. effective against gram-positive and gram-negative bacteria, yeasts (candida), and molds (aspergillus). activity ph range: 3-9.
Typically Found In: All cosmetic formulations as primary preservative
TECHNICAL DETAILS
Primary Category: Functional ingredient โ broad-spectrum preservative
Secondary Functions: Skin conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.1%โ1% (eu max 1%)
SOURCING & ETHICS
Vegan Status: Yes โ synthetic
Halal Status: Yes
Source Notes: Commercially produced for cosmetic use. verify vegan/halal status with supplier.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Well-tolerated by most skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Eu cosmetics regulation max 1%. sccs assessed as safe at โค1%. avoid use around eyes in baby products per some country regulations. ewg score: 4.
Works Well With: Standard skincare actives
Avoid Combining With: No known significant incompatibilities
SCIENTIFIC NOTE
Phenoxyethanol's widespread adoption as the primary cosmetic preservative followed the phaseout of parabens from many formulations in the 2000s-2010s. despite having a comparable or better safety profile to parabens, it is often cited in 'free-from' formulations โ a consumer perception issue rather than a scientific safety concern.
Last Verified: Cosing database,sccs opinion on phenoxyethanol,cir safety assessment
Primary Sources: 2026-03-12