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Jack Black Jack Black Line Smoother 8% Glycolic Acid Treatment - Product image showing packaging and label for comedogenic ingredient analysis
Jack BlackExfoliant

Jack Black Line Smoother 8% Glycolic Acid Treatment

Moderate Risk(6)
37 ingredients3 flagged

Jack Black Line Smoother 8% Glycolic Acid Treatment is a powerful, multi-action treatment designed to improve skin texture and minimize the appearance of fine lines. This formula features an 8% concentration of Glycolic Acid, an Alpha Hydroxy Acid (AHA) that works to chemically exfoliate the skin by dissolving dead skin cells and promoting cellular turnover. To balance the potent exfoliation, Jack Black has included Glycerin, a high-performing humectant that helps the skin retain moisture, and C12-15 Alkyl Benzoate for a smooth, non-greasy finish. The texture is tailored for quick absorption, making it an efficient step for those wanting to tackle dullness and signs of aging simultaneously. While the Glycolic Acid is excellent for keeping the skin surface clear, the formula sits in a creamy base of emollients. Users will find it provides a significant smoothing effect, though those with specific pore-clogging sensitivities should note the presence of certain fatty acids used to stabilize the product and provide its signature feel. It is an ideal option for those looking to brighten their complexion while maintaining a healthy skin barrier.

Our Analysis

Our analysis of the Jack Black Line Smoother 8% Glycolic Acid Treatment classifies it as having a moderate comedogenic risk. The formula contains three ingredients flagged with a 2/5 rating: stearic acid, capric/caprylic triglyceride, and cetyl alcohol. Stearic acid is a thickening agent that can occasionally trigger congestion in acne-prone individuals. Capric/caprylic triglyceride, derived from coconut oil, is generally safe but can affect those sensitive to fatty acids. Finally, cetyl alcohol is an emollient that is typically well-tolerated but carries a low-level risk for the most sensitive skin types. Users should weigh these moderate risks against the exfoliating benefits of the glycolic acid.

Skin Type Recommendations

This treatment is best for normal, dry, and combination skin types seeking anti-aging benefits and smoother texture. The emollient ingredients help prevent the irritation often associated with AHAs. However, those with very oily or highly acne-prone skin should use caution, as the moderate-risk ingredients could potentially contribute to pore congestion.

Flagged Ingredients

2
stearic acid

Found in many butters; thickening agent with low-moderate risk.

2
capric/caprylic triglyceride

Fractionated coconut oil; removed most clogging long-chain acids but can still affect some.

2
cetyl alcohol

A fatty alcohol (emollient) that is generally safe, but can be problematic for very sensitive individuals.

Want Deeper Analysis?

Run our MACR (Multi-Axis Comedogenic Risk) analysis to get a comprehensive 5-axis risk assessment. This AI-powered analysis evaluates ingredients for Plugging Risk, Barrier Damage, Fungal Acne Risk, Oxidation Risk, and real-world User Reports — giving you personalized scores for your skin type.

Full Ingredient List(37 ingredients)

Water (Aqua)Glycolic AcidGlycerinC12-15 Alkyl BenzoateStearic AcidCaprylic/​Capric TriglycerideSodium HydroxideGlyceryl StearateDimethiconeSodium Acrylate/​Sodium Acryloyldimethyl Taurate/​Acrylamide CopolymerPanthenolAllantoinRetinyl PalmitateTocopheryl AcetateAloe Barbadensis Leaf Juice*Lavandula Angustifolia (Lavender) Flower Extract*Salvia Officinalis (Sage) Leaf Extract*Vitis Vinifera (Grape) Seed ExtractGlycyrrhiza Glabra (Licorice) Root ExtractCetyl AlcoholSorbitan StearateXanthan GumMagnesium Aluminum SilicateHydroxyethylcelluloseIsohexadecanePolysorbate 80Peg-100 StearateChlorphenesinDehydroacetic AcidBenzyl AlcoholPropylene GlycolCaprylic/Capric TriglycerideSodium Acrylate/Sodium Acryloyldimethyl Taurate/Acrylamide CopolymerRead all the geeky details about Glycolic Acid here >>Read all the geeky details about Glycerin here >>Read all the geeky details about Propylene Glycol here >>[more]

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Our analysis is powered by AI and backed by extensive research on comedogenic ingredients — but it's not medical advice. For skin concerns, please consult a dermatologist.