Question 1

What's the difference between a hydrating cleanser and a foaming cleanser?

Accepted Answer

Hydrating cleansers (like CeraVe Hydrating) use gentle surfactants or no-rinse formulas that remove dirt and light makeup without foaming. They preserve the skin's moisture barrier — ideal for dry, sensitive or eczema-prone skin. Foaming cleansers (like CeraVe Foaming) create a lather that's more effective at breaking down excess oil and sebum. Better for oily or combination skin — but can over-strip dry or sensitive skin if used daily. Rule of thumb: If your skin feels tight or dry after washing, switch to a hydrating formula. If your skin looks shiny by midday, a foaming cleanser is the right call.

Question 2

Do vitamin C serums actually work, or is it marketing?

Accepted Answer

The evidence is real — but the formulation matters enormously. L-ascorbic acid (the active form of vitamin C) has solid peer-reviewed support for brightening, antioxidant protection, and supporting collagen synthesis. The caveat: it must be at a pH of 3.0–3.5 and a concentration of at least 10–20% to penetrate the skin barrier. Many budget vitamin C products use less effective derivatives or have a pH too high to work. Paula's Choice BOOST C15 uses verified L-ascorbic acid at the right pH. TruSkin is more affordable with a slightly different formulation. Store vitamin C serums away from light and heat — they oxidise quickly. If the serum turns orange or brown, it's degraded and won't work.

Question 3

How do I start using a retinoid without wrecking my skin?

Accepted Answer

Retinoids (including Differin's adapalene) cause retinoid dermatitis in most new users — redness, dryness, and peeling in the first 4–8 weeks. This is normal and temporary, not damage. The slow approach: Weeks 1–2: Apply every 3rd night, over moisturiser (the "sandwich" method — moisturise, apply retinoid, moisturise again). Weeks 3–4: Every other night. Week 5+: Nightly, if tolerated. Always use SPF during the day — retinoids increase photosensitivity. Adapalene (Differin) is an ideal starting retinoid because it's less irritating than tretinoin but delivers clinically comparable results for acne and photoaging.

Question 4

Is niacinamide worth it?

Accepted Answer

Yes — and it's the most underrated ingredient in skincare. Niacinamide (vitamin B3) has solid clinical backing for: reducing pore appearance , controlling sebum , improving uneven skin tone , and reducing blemish marks (post-inflammatory hyperpigmentation). At 10% (The Ordinary's formulation), you're at the top of the clinically studied range. The zinc PCA adds an additional sebum-regulating effect. It plays well with most other actives — including retinoids, vitamin C, and AHAs. At under $7 a bottle, it's arguably the best value active in skincare.

Question 5

Do I need a separate face sunscreen, or does body SPF work?

Accepted Answer

Technically body sunscreens provide the same UV protection — the SPF rating is standardised. The real issue is texture and wearability . Body sunscreens are often thicker, leave a white cast, and can feel greasy on the face, making people less likely to apply and reapply them. Face-specific formulas like EltaMD UV Clear (tinted, with niacinamide) and LRP Anthelios Light Fluid are engineered for thin facial skin — lightweight, non-comedogenic, and designed to work under or without makeup. The best SPF is the one you'll actually wear every day. On the face, that almost always means a face-specific formula.

Question 6

What skincare ingredients should I NOT mix together?

Accepted Answer

Most skincare ingredients are safe to combine, but a few pairings cause problems: Vitamin C + AHAs/BHAs at the same time: Both are acidic; layering them in the same routine can cause irritation. Use vitamin C in the morning, AHAs/BHAs at night. Retinoids + AHAs/BHAs at the same time: Both increase cell turnover. Too much at once → excessive irritation. Alternate nights or use one AM, one PM. Benzoyl peroxide + retinoids: BP oxidises retinol, reducing its effectiveness. If using both, apply at separate times of day. Safe pairings: Niacinamide goes with almost everything — vitamin C, retinoids, AHAs, hyaluronic acid. Hyaluronic acid goes with everything.

Question 7

What does 'non-comedogenic' actually mean?

Accepted Answer

"Non-comedogenic" means the product is formulated to not clog pores (comedones = clogged pores that become blackheads or whiteheads). It's a meaningful claim — but it's self-reported, not FDA-regulated, so there's no standardised testing requirement behind it. The safest approach for acne-prone skin: look for products explicitly labelled non-comedogenic AND oil-free, and check for known pore-clogging ingredients like isopropyl myristate, coconut oil, and certain silicones. All products recommended on this page are dermatologist-tested and non-comedogenic.

Skincare works. Most people just never got the right information.

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