OBAGI Clear vs Clear FX: Which Hydroquinone Alternative is Right for You?
OBAGI Nu-Derm Clear and Clear FX occupy the same step in the Nu-Derm system — Step 3 — and both treat hyperpigmentation by inhibiting melanin production. The difference is the active ingredient: Clear contains hydroquinone 4% (prescription-only); Clear FX contains arbutin 7% (available without a prescription). This guide explains the difference and how to choose between them.
OBAGI Nu-Derm Clear contains hydroquinone 4%, a prescription-only medicine in the UK. A medical assessment is required before purchase. This article is for educational purposes only.
OBAGI Nu-Derm Clear (hydroquinone 4%)
Hydroquinone inhibits tyrosinase — the enzyme responsible for melanin synthesis — preventing new pigment from forming and gradually fading existing dark spots. At 4%, it is the most clinically substantiated topical ingredient for hyperpigmentation and melasma, and works synergistically with tretinoin (Step 7 of the Nu-Derm system), which enhances its penetration.
Best suited to: moderate to severe hyperpigmentation, melasma, sun damage, and post-inflammatory hyperpigmentation where gentler alternatives have not produced sufficient results.
Key considerations:
- Prescription-only at 4% in the UK — requires a medical assessment
- Should be cycled: 3–4 months on, 2–3 months off, to reduce the risk of ochronosis with prolonged use
- Can cause irritation, particularly during the adjustment period when combined with tretinoin
- Daily broad-spectrum SPF 50 is required — hydroquinone increases photosensitivity
- Not suitable during pregnancy or breastfeeding
OBAGI Nu-Derm Clear FX (arbutin 7%)
Arbutin is a naturally derived compound that inhibits tyrosinase through a gentler, more gradual mechanism than hydroquinone. It is sometimes described as a milder alternative to hydroquinone — effective for mild to moderate pigmentation, with a significantly lower irritation profile and no cycling requirement.
Best suited to: mild to moderate hyperpigmentation, sensitive or reactive skin, those who have experienced irritation with hydroquinone, and as a maintenance product between hydroquinone cycles.
Key considerations:
- No prescription required
- Can be used continuously without cycling
- Slower results than hydroquinone — less effective for severe or stubborn pigmentation
- Daily broad-spectrum SPF 50 is still required
- Consult your clinician before use during pregnancy
Side-by-side comparison
| Factor | Clear (hydroquinone 4%) | Clear FX (arbutin 7%) |
|---|---|---|
| Active ingredient | Hydroquinone 4% | Arbutin 7% |
| Prescription required | Yes | No |
| Potency | High | Moderate |
| Irritation risk | Moderate (higher with tretinoin) | Low |
| Cycling required | Yes (3–4 months on, 2–3 off) | No |
| Best for | Moderate–severe pigmentation, melasma | Mild–moderate pigmentation, sensitive skin, maintenance |
| Pregnancy | Not suitable | Consult clinician |
Using them together: the cycling approach
A common and clinically sensible strategy is to use both products in rotation:
- Use Clear (hydroquinone 4%) for 3–4 months to achieve initial results
- Switch to Clear FX (arbutin 7%) for 2–3 months as a maintenance break
- Return to Clear if pigmentation returns or for a further treatment cycle
This approach delivers the efficacy of hydroquinone when needed while avoiding the risks of continuous long-term use. Clear FX maintains brightening progress during the break period.
How to use in the Nu-Derm system
Both products are used identically as Step 3 of the Nu-Derm protocol:
- Cleanse (Nu-Derm Gentle Cleanser or Foaming Gel)
- Apply Nu-Derm Toner
- Apply Clear or Clear FX to the entire face or targeted areas
- Wait 5–10 minutes for absorption
- Continue with Nu-Derm Blender (Step 5) if using
- In the evening, apply tretinoin (Step 7) after Clear/Clear FX has absorbed
- Apply moisturiser
- Apply SPF 50 every morning as the final step
For a full walkthrough of the Nu-Derm protocol, see our complete Obagi Nu-Derm routine guide.
Frequently asked questions
- What is the difference between OBAGI Clear and Clear FX?
- Clear contains hydroquinone 4% (prescription-only, more potent, requires cycling). Clear FX contains arbutin 7% (no prescription required, gentler, can be used continuously). Both occupy Step 3 of the Nu-Derm system and are used one at a time — never simultaneously.
- Which is more effective — Clear or Clear FX?
- Clear (hydroquinone 4%) is more potent and produces faster, more significant results for moderate to severe hyperpigmentation and melasma. Clear FX is effective for mild to moderate pigmentation and is better suited to sensitive skin or as a maintenance product.
- Can I switch between Clear and Clear FX?
- Yes — switching between them is a recommended strategy. Use Clear for 3–4 months, then switch to Clear FX for the 2–3 month break period. This maintains brightening progress while avoiding the risks of continuous hydroquinone use.
- Do I need a prescription for OBAGI Clear FX?
- No. Clear FX contains arbutin rather than hydroquinone and is available without a prescription. OBAGI Clear (hydroquinone 4%) is prescription-only in the UK and requires a medical assessment.
- Can I use Clear or Clear FX during pregnancy?
- Clear (hydroquinone) is not suitable during pregnancy or breastfeeding. Clear FX (arbutin) is generally considered lower risk, but all skincare actives should be discussed with your GP or midwife before use during pregnancy.
