ISDIN Glicoisdin® 15 Moderate

ISDIN Glicoisdin® 15 Moderate is the mid-strength at-home glycolic acid peel formulated with 15% glycolic acid (6.1% free acid) designed to deliver more advanced smoothing, brightening, and resurfacing for clients who have built tolerance to gentler peels.

This mid-tier peel is recommended for clients who have used Glicoisdin 8 (or similar AHAs) for 4–6 weeks and are ready for more advanced exfoliation.

At Le Petit Spa in Charlotte, NC, Glicoisdin 15 Moderate is our go-to "next step" recommendation for clients who've outgrown a gentle exfoliant but aren't quite ready for Glicoisdin 25 Intense. It's the sweet spot for visible texture and tone improvement without overwhelming the skin barrier.

Key Benefits

• 15% glycolic acid - mid-strength chemical exfoliation
• Helps smooth texture and brighten dullness more visibly
• Suitable for clients with built AHA tolerance
• Evening leave-on treatment
• Pairs with daily routine for radiance
• Esthetician-recommended progression peel

At a Glance

• Size: 50 ml
• Category: Exfoliants
• Targets: Fine Lines & Aging, Dark Spots, Dullness & Texture

Key Ingredients

• Glycolic Acid (6.1% free acid): an alpha-hydroxy acid that speeds cell turnover to smooth texture and brighten dull, uneven-looking skin
• Aloe Vera: hydrates and soothes skin to help offset the exfoliating effect of the acid

How to Use
Apply at night to clean, dry skin with a gentle massage until fully absorbed, avoiding the eye area. During the first week, apply every other night; move to nightly use as tolerance builds. Daily broad-spectrum sunscreen the following morning is required.

Ingredient and usage information published by the manufacturer.

FAQ

How is this different from Glicoisdin 8 Soft?
Glicoisdin 15 Moderate has a higher glycolic acid concentration (6.1% free acid vs. 3.2%), delivering more visible resurfacing for skin that has already built some AHA tolerance.

Am I ready to move up from Glicoisdin 8?
If you've used Glicoisdin 8 or a similar gentle AHA for 4-6 weeks without irritation, you're typically ready to progress to the 15 Moderate strength.

Do I need to wear sunscreen with this product?
Yes - daily broad-spectrum sunscreen is required, since glycolic acid increases the skin's sensitivity to sun.

Can I use this every night right away?
No - start with every-other-night application for the first week to let your skin adjust before moving to nightly use.

What if my skin feels irritated?
Reduce frequency and speak with your esthetician; you may need more time at a gentler strength before progressing further.

Is this suitable for acne-prone or combination skin?
Yes - glycolic acid exfoliation is commonly recommended for combination and acne-prone skin to help refine texture and tone.