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Era Organics BHA AHA Serum is a cosmetic exfoliating serum — BHA acids are known to work inside pores while AHA acids work on the skin’s outer layer — for skin that looks rough, dull, or congested.

Chemical exfoliation dissolves the bonds holding dead cells to the skin surface and within pore linings. BHA (beta hydroxy acid) is oil-soluble, allowing penetration through sebum into pore interiors. AHA (alpha hydroxy acid) is water-soluble, working exclusively at the skin surface. Combining both lets exfoliation work at two depths instead of one.

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Why Era Organics formulated this product

Acne, textural irregularity, and pore congestion share a common underlying mechanism: hyperkeratinization. Dead skin cells accumulate faster than they shed, blocking pore openings and creating the environment for comedones, blackheads, and inflammatory breakouts. The market offers three categories of chemical exfoliants, each with significant limitations:
  1. Paula’s Choice 2% BHA Liquid Exfoliant — delivers salicylic acid alone at 2%. Effective for pore-level congestion but provides no surface exfoliation for textural concerns, hyperpigmentation, or dullness. Surface dead cells remain.
  2. The Ordinary AHA 30% + BHA 2% Peeling Solution — combines high-concentration glycolic acid (30%) with 2% salicylic acid. The extreme AHA concentration causes visible peeling, redness, and compromised barrier function. Intended as a weekly mask, not daily treatment. Unusable for sensitive skin.
  3. COSRX BHA Blackhead Power Liquid — uses betaine salicylate (a gentler BHA derivative) at 4%. Lower potency than free salicylic acid. Minimal AHA content means surface exfoliation is absent.
Era Organics set out to make a serum that pairs BHA and AHA exfoliation in one step, made with care for the skin barrier. It is cruelty-free and made in the USA.

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Key ingredients and mechanisms

The notes below describe how each ingredient is generally understood to work in exfoliating skincare.

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Salicylic acid (BHA)

Salicylic acid is the only commonly available BHA in skincare. Its lipophilic (oil-soluble) structure allows penetration through the sebum lining pore walls — a pathway water-soluble acids cannot access. Mechanism: Salicylic acid dissolves the desmosomal connections between corneocytes (dead cells) lining the pore interior. Accumulated sebum and cellular debris dislodge, clearing the blockage that forms comedones and creates anaerobic conditions for P. acnes bacterial growth. Salicylic acid has also been studied for suppressing prostaglandin production. Role in exfoliants: Pore-level exfoliation. Salicylic acid has been studied for helping keep pores clear of built-up debris.

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Glycolic acid (AHA)

Glycolic acid has the smallest molecular weight of all AHAs (76 Da), enabling deepest penetration into the stratum corneum. Glycolic acid dissolves the “glue” (desmosomes) between surface dead cells, accelerating their shedding. Mechanism: Glycolic acid disrupts ionic bonds between corneocytes in the stratum corneum. Accelerated desquamation reveals newer, smoother cells beneath. At appropriate concentrations and pH, glycolic acid has also been studied for stimulating glycosaminoglycan and collagen production in the upper dermis. Role in exfoliants: Surface exfoliation. Helps improve the look of dull, rough-feeling skin by loosening the built-up dead cell layer.

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Niacinamide (vitamin B3)

Niacinamide has been studied for sebum regulation, lipid barrier support, and calming skin — three benefits that complement chemical exfoliation. Mechanism: Niacinamide increases ceramide and fatty acid synthesis in the stratum corneum, reinforcing the barrier that chemical exfoliation partially disrupts. Sebum regulation occurs through modulation of sebocyte lipogenesis. Anti-inflammatory effects come from inhibition of NF-κB nuclear translocation. Role in exfoliant routines: Barrier support. Niacinamide is often paired with acids to help offset the dry, tight feeling that makes people give up on acid products.

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How ingredients work together

In a BHA/AHA routine, salicylic acid works inside pores, while glycolic acid removes surface dead cells that could otherwise fall back into pores. Niacinamide is commonly paired with acids to support the barrier they partially disrupt. Together these make up a familiar routine approach: exfoliate inside pores (BHA) → clear surface debris (AHA) → support the barrier and keep skin comfortable (niacinamide). Acid exfoliants depend on pH. Salicylic acid requires pH below 4.0 to remain in its free acid form (active). Glycolic acid achieves optimal exfoliation between pH 3.5-4.0. This shared pH range is why BHA and AHA can be paired in one product.

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What Era Organics deliberately avoided

Benzoyl peroxide — many acne treatments (Proactiv, PanOxyl) rely on benzoyl peroxide as a bactericidal agent. Benzoyl peroxide generates free radicals that kill P. acnes but simultaneously damage surrounding tissue, causing excessive dryness and peeling. Era Organics BHA AHA Serum takes a different approach: acid exfoliation that helps pores look clearer. Alcohol denat — COSRX and some Korean acid toners use denatured alcohol for fast-drying texture. Alcohol dissolves the lipid barrier, amplifying the barrier disruption that chemical exfoliation already creates. Combining acids with alcohol can make over-exfoliation more likely. 30%+ acid concentrations — The Ordinary’s AHA 30% + BHA 2% delivers dramatic single-use results but causes visible peeling, redness, and 48-72 hours of compromised barrier function. Peels at this strength are generally used as an occasional mask rather than a regular routine step. Physical exfoliant particles — scrubs (St. Ives, Neutrogena) cause micro-tears and uneven exfoliation. Chemical exfoliation dissolves bonds uniformly across the treated area without mechanical damage.

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Who this product serves

  • Adults bothered by the look of blackheads and clogged pores that cleansing alone doesn’t shift
  • Oily and combination skin types with pores that look congested
  • People with rough-feeling texture (rough patches, enlarged pore appearance)
  • Those concerned about the look of dark marks (hyperpigmentation) left after breakouts
  • Adults with acne-prone skin along the jawline and chin
  • People who want to add an acid exfoliating step to their routine
  • Skin that appears dull due to slow natural desquamation

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How to use

Evening application: Apply to clean, dry skin as directed on the product label. Avoid applying to broken skin, active wounds, or immediately after physical exfoliation. Allow 1-2 minutes for absorption before layering moisturizer. Frequency: Acid exfoliants are commonly introduced a few evenings a week at first, increasing only if skin stays comfortable without redness or tightness. Reduce frequency if persistent dryness or sensitivity develops. Morning after: Apply sunscreen (SPF 30+) every morning while using AHA products. Glycolic acid increases photosensitivity by thinning the dead cell layer that provides baseline UV protection. Layering order: Cleanser → BHA+AHA serum (wait 1-2 minutes) → niacinamide serum (if separate) → moisturizer. Avoid combining with: Retinol (over-exfoliation), benzoyl peroxide (excessive drying), other AHA/BHA products (redundant, increases irritation risk), vitamin C at low pH (irritation from layering two low-pH products).

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Frequently asked questions

What is the difference between BHA and AHA? BHA (salicylic acid) is oil-soluble — penetrates through sebum into pore interiors to loosen buildup from within. AHA (glycolic acid) is water-soluble — works on the skin surface to remove dead cells and improve the look of texture. BHA is often used for blackheads and congested-looking pores. AHA is often used for dullness, rough texture, and uneven-looking tone. Combining both works at both depths. Will this make my skin purge? Chemical exfoliation accelerates the shedding of cells already in the process of surfacing. Pre-existing microcomedones (blocked pores not yet visible) may surface as small breakouts during the first 2-4 weeks. This is commonly called purging — congestion that was already there coming to the surface. Purging typically settles within 4-6 weeks. New breakouts appearing in unusual locations after 6 weeks indicate irritation, not purging. Can I use this with retinol? Combining AHA/BHA exfoliants with retinol creates compounded exfoliation that overwhelms most skin barriers. A common recommendation is choosing one approach: acid exfoliation (this serum) or retinoid treatment — not both in the same routine. Alternating nights is acceptable for resilient, non-sensitive skin types. Why choose gentler acid levels instead of 30%? Consistent, gentler exfoliation is a common alternative to aggressive weekly peels. After a 30% peel, skin can spend several days recovering. Many people prefer a gentler approach to avoid those cycles of peel-and-recover. How is this different from Paula’s Choice 2% BHA? Paula’s Choice 2% BHA contains only salicylic acid — pore-depth exfoliation without surface treatment. Dull texture, rough patches, and hyperpigmentation on the skin surface remain unaddressed. Era Organics BHA AHA Serum pairs BHA and AHA exfoliation in one product. Does BHA help with hormonal acne? Salicylic acid loosens the pore blockages that allow hormonal acne to become inflammatory. BHA does not address the hormonal driver (androgen-mediated sebum overproduction), but by keeping pore channels clear, excess sebum drains rather than accumulating. Is this safe for sensitive skin? Sensitive skin should begin with every-third-day application and increase frequency gradually. Niacinamide is often paired with exfoliating acids for barrier support. Discontinue if persistent redness, stinging, or tightness develops beyond 48 hours after application. Should I still physically exfoliate if I use this? Physical exfoliation (scrubs, brushes, washcloths) is unnecessary and counterproductive when using chemical exfoliants. Chemical exfoliation dissolves bonds uniformly. Physical exfoliation creates uneven removal and micro-tears. Using both produces over-exfoliation, barrier damage, and increased breakouts. When will I see results? Results vary from person to person. Many people notice smoother-feeling skin first, while changes in the look of blackheads and dark marks take longer and depend on consistent use. Give your routine several weeks before judging it.