For Oily Skin (Excess Sebum)

1. Niacinamide (Vitamin B3) Serum - Best Starting Point

• Concentration: 5-10%
• Directly reduces sebaceous gland activity and decreases sebum excretion rate
• Also calms inflammation and minimizes pore appearance
• Works for all skin tones, very well tolerated
• Products: The Ordinary Niacinamide 10% + Zinc 1%, Paula's Choice 10% Niacinamide Booster

2. Salicylic Acid (BHA)

• Concentration: 0.5-2%
• Oil-soluble - penetrates into pores and dissolves sebum plugs
• Exfoliates inside the follicle, preventing clogged pores
• Use as a toner or serum 2-3x per week initially
• Products: Paula's Choice BHA Liquid, CeraVe SA Lotion

3. Retinoids (Vitamin A Derivatives)

• Retinol (OTC, 0.025-1%) or Tretinoin (prescription, 0.025-0.1%)
• Normalizes skin cell turnover, reduces sebaceous gland size with prolonged use
• Tretinoin (Retin-A) is the most evidence-backed option for oily/acne-prone skin
• Use at night only; expect a 6-8 week adaptation period with some initial dryness
• Note: Tretinoin requires a doctor's prescription

4. Zinc-Containing Formulas

• Zinc PCA or zinc gluconate in serums and moisturizers reduce sebum production
• Often combined with niacinamide for a synergistic effect

For Facial Pigmentation (Dark Spots, Melasma, Post-Acne Marks)

1. Vitamin C Serum (L-Ascorbic Acid) - Daytime Pick

• Concentration: 10-20%
• Inhibits tyrosinase (the enzyme that produces melanin), brightens existing dark spots
• Also neutralizes UV-induced free radicals - doubles as an antioxidant shield
• Apply in the morning under SPF
• Products: SkinCeuticals C E Ferulic, CeraVe Vitamin C Serum, Timeless 20% Vitamin C

2. Tranexamic Acid

• One of the most effective newer ingredients for melasma and stubborn pigmentation
• Works by blocking the UV-induced pathway that triggers excess melanin production
• Very gentle - safe for sensitive skin and all skin tones
• Can be used AM and PM
• Products: SkinCeuticals Discoloration Defense (also contains kojic acid + niacinamide), The Inkey List Tranexamic Acid Serum

3. Azelaic Acid

• Concentration: 10% (OTC) or 15-20% (prescription)
• Inhibits tyrosinase, reduces post-inflammatory hyperpigmentation (PIH), also reduces redness
• Ideal if you have both oily/acne-prone skin AND pigmentation - it targets both
• Suitable for use during pregnancy (unlike some other depigmenting agents)
• Products: The Ordinary Azelaic Acid 10%, Finacea 15% (Rx)

4. Hydroquinone

• Concentration: 2% (OTC) or 4% (prescription)
• Considered the gold standard depigmenting agent by dermatologists
• Bleaches existing dark spots by blocking melanin synthesis
• Use with caution: Should NOT be used continuously for more than 3-4 months at a time; can cause ochronosis (paradoxical darkening) with very prolonged use
• Prescription 4% hydroquinone (e.g., Obagi-C Rx Clarifying Serum) is significantly more effective than OTC 2%

5. Alpha Arbutin

• Gentler alternative to hydroquinone; derived from the bearberry plant
• Concentration: 2%
• Inhibits tyrosinase without the risk of ochronosis
• Good for mild-moderate pigmentation and darker skin tones

6. Kojic Acid

• Derived from fungi; inhibits tyrosinase
• Often combined with niacinamide and tranexamic acid (e.g., in SkinCeuticals Discoloration Defense)

Combination Approaches (Evidence-Based)

Non-Negotiable Rule: Daily SPF

When to See a Dermatologist

• If over-the-counter options aren't working after 8-12 weeks
• For prescription tretinoin or 4% hydroquinone
• For in-office treatments like chemical peels, laser (Q-switched Nd:YAG), or microneedling if topical treatment alone is insufficient