Cosmetic Ingredient
- • Abrasive (124)
- • Absorbent (84)
- • Anticaking (66)
- • Anticorrosive (25)
- • Antifoaming (19)
- • Antimicrobials (291)
- • Antioxidant Ingredient (395)
- • Antiperspirant (20)
- • Antiplaque (48)
- • Anti-seborrheic (38)
- • Anti-sebum (39)
- • Antistatic (458)
- • Astringent (162)
- • Binding Agent (172)
- • Bleaching Agent (53)
- • Buffering (191)
- • Bulking (109)
- • Chelating (122)
- • Cleansing (680)
- • Cosmetic Colorant (212)
- • Cosmetic Preservative (158)
- • Denaturant (45)
- • Deodorant (98)
- • Depilatory (27)
- • Dissolving Agent (298)
- • Emollient (796)
- • Emulsifying Agent (482)
- • Emulsion Stabilising (154)
- • Exfoliating (19)
- • Film Forming (299)
- • Flavouring (72)
- • Foam Boosting (161)
- • Foaming (101)
- • Fragrance Ingredient (733)
- • Gel Forming (19)
- • Hair Conditioning (672)
- • Hair Dyeing (363)
- • Hair Fixing (36)
- • Hair Waving or Straightening (45)
- • Humectant (282)
- • Hydrotrope (92)
- • Keratolytic (20)
- • Light Stabilizer (80)
- • Moisturising Agent (50)
- • Nail Conditioning (42)
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- • Opacifying (119)
- • Oral Care (123)
- • Oxidising (19)
- • Perfuming (2106)
- • Plasticiser (98)
- • Propellant (19)
- • Reducing (52)
- • Refatting (12)
- • Refreshing (27)
- • Skin Cleansing (388)
- • Skin Conditioning (1753)
- • Skin Humectant (21)
- • Skin Protecting (282)
- • Smoothing (32)
- • Soothing (72)
- • Tonics (155)
- • UV Filter (34)
- • Viscosity Controlling (532)
Chemicals as Skincare Ingredients
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More Information
The stratum corneum is the outermost layer of the epidermis, composed of dead keratinocytes, approximately 10-15 layers thick, with each layer about 0.02mm in thickness. Normally, as keratinocytes differentiate and migrate upward, the outermost layer of corneocytes gradually sheds.
However, factors like aging, external stressors, and UV exposure can slow down skin turnover, leading to abnormal shedding or renewal of the stratum corneum. This can result in dull, rough, lackluster skin and hinder the absorption of subsequent skincare products. Acid-containing cosmetics effectively exfoliate by dissolving the protein connections between corneocytes, making shedding easier. This process can improve pore blockages and metabolize some melanin in the stratum corneum, leaving the skin looking brighter and smoother.
Chemical exfoliation primarily utilizes acids and cationic surfactants, including:
Alpha-hydroxy acids (often found in fruits like lemons and apples, commonly known as fruit acids)
Beta-hydroxy acids (salicylic acid)
Frequently Asked Questions
Exfoliating is the process of removing dead skin cells from the surface of your skin using either physical scrubs or chemical exfoliants like AHAs (alpha hydroxy acids) or BHAs (beta hydroxy acids). Regular exfoliation helps unclog pores, improve skin texture, enhance product absorption, and promote a brighter complexion. It’s a key step in maintaining healthy, radiant skin when done correctly and not overused.
There are two main types of exfoliating methods: physical and chemical. Physical exfoliation involves using granular scrubs, brushes, or cleansing tools to manually slough off dead skin cells. Chemical exfoliation uses acids such as glycolic acid, salicylic acid, or lactic acid to dissolve dead skin cells without scrubbing. Each method suits different skin types—sensitive skin often benefits more from gentle chemical exfoliants, while oily or resilient skin may tolerate physical exfoliation better.
The ideal frequency for exfoliating depends on your skin type and the exfoliant used. Generally, most people benefit from exfoliating 1–3 times per week. Sensitive skin should limit exfoliation to once a week with mild formulas, while oily or acne-prone skin may tolerate 2–3 sessions weekly. Over-exfoliating can lead to irritation, dryness, or compromised skin barrier function, so always follow product instructions and monitor your skin’s response.
Yes, exfoliating can be effective in managing acne and blackheads by clearing clogged pores and preventing buildup of oil and dead skin cells. Chemical exfoliants like salicylic acid (a BHA) penetrate deep into pores to dissolve sebum and debris, making them especially useful for acne-prone skin. However, aggressive scrubbing or overuse can worsen inflammation, so it’s important to choose non-comedogenic, dermatologist-recommended exfoliants and use them consistently but gently.
When choosing an exfoliating product, consider your skin type, concerns, and ingredient compatibility. Look for products with proven active ingredients—such as glycolic acid for anti-aging, salicylic acid for acne, or lactic acid for sensitive skin. Avoid harsh abrasives like walnut shells that can cause micro-tears. Also check for added soothing ingredients like aloe vera or niacinamide to minimize irritation. Always patch-test new exfoliants and start with lower concentrations to assess tolerance.