Medik8
Crystal Retinal 6 30ml
Crystal Retinal 6 30ml
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The retinoid that means business. Crystal Retinal 6 uses retinaldehyde — the form of vitamin A closest to retinoic acid without requiring a prescription. It converts faster and more efficiently than retinol, delivering visible results in less time with better tolerability. At 0.06%, this is the mid-point of the Crystal Retinal range and the strength most commonly recommended for patients who have outgrown entry-level retinoids.
What it does:
- Accelerates cell turnover to smooth texture and refine pores
- Stimulates collagen production for firmer, denser skin
- Fades pigmentation and post-blemish marks more effectively than retinol
- Improves skin tone and radiance over time
- Clinically proven antibacterial properties to support acne-prone skin
Best for: Intermediate retinoid users ready to step up from Crystal Retinal 3 or equivalent retinol products. Ideal for targeting early-to-moderate signs of ageing, uneven texture, and post-inflammatory pigmentation. Visible results from 4–8 weeks.
How to use: Apply a pea-sized amount to clean, dry skin in the evening. Follow with moisturiser. Start every other night if new to this strength and build to nightly use. Always use broad-spectrum SPF during the day.
Clinician's Note
Clinician's Note
This product has been personally reviewed and selected by our founder based on clinical evidence, ingredient efficacy, and real-world patient outcomes. If you're unsure whether this is right for your skin, start a free written skin assessment and we'll recommend the best option for you.
How to Use
How to Use
Apply as directed by the product packaging or your clinician's recommendation. For best results, use consistently as part of a complete skincare routine. Not sure about application order? Ask our clinician — it's free.
Shipping & Returns
Shipping & Returns
Dispatch: 1-2 working days
Delivery: 2-4 working days (Royal Mail tracked)
Free shipping on orders over £100
Returns: Unused, unopened products may be returned within 7 days with prior approval. Prescription items cannot be returned once dispensed.
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Complete Your CSA Routine
Retinoids work best as part of the CSA framework — add vitamin C for morning protection and SPF to shield retinoid-sensitised skin.


