What is GLP-1

Key Takeaways

• GLP-1 medications mimic a natural gut hormone that tells your brain you're full, helping regulate blood sugar and reduce appetite — originally developed for type 2 diabetes and now widely used for weight management.
• Rapid weight loss from GLP-1 use can trigger temporary hair thinning — metabolic stress and sudden changes in nutrition can disrupt the hair growth cycle, leading to breakage and reduced fullness.
• The Redken Acidic Grow Full System is a 4-step routine — Shampoo, Conditioner, Serum, and Densifying Spray — designed to reduce breakage and support fuller, denser-looking hair for GLP-1 users experiencing hair loss.

GLP-1 stands for Glucagon-like Peptide-1. It's a natural hormone your body already makes — your gut releases it every time you eat. Its job is simple: tell your brain you're full and help your body manage blood sugar levels. GLP-1 medications mimic that natural hormone.

GLP-1 work by:

• Making you feel full faster — so you naturally eat less
• Keeping you satisfied longer — reducing the urge to snack or overeat
• Quieting food noise — the constant mental preoccupation with eating that many people experience
• They were originally developed to treat type 2 diabetes but are now widely prescribed for weight management.

What To Know About GLP-1

Metabolic stress from rapid weight loss and sudden changes in nutritional intake that sometimes accompany use of prescription drugs such GLP-1 medications can trigger temporary thinning.

If you have thin hair and are experiencing hair breakage or are a GLP-1 user experiencing hair loss, our hair and scalp care routine can help make a difference. The goal isn't about growing new hair, it's about reducing breakage and achieving fuller looking hair.

• Start off with Redken Acidic Grow Full System Shampoo – a hydrating shampoo for thin, flat hair.
• Follow with Acidic Grow Full System Conditioner, a conditioner that does not weigh down fine or thinning hair.
• Acidic Grow Full System Serum is a scalp & hair serum for thin, flat hair with our 5% Strength Complex. It absorbs quickly without residue, ensuring your scalp feels refreshed and your hair looks full.
• Complete your regimen with Acidic Grow Full System Densifying Spray for an immediate visible transformation. This leave-in treatment provides instant root lift for a fuller look and feel while protecting hair from heat styling up to 450°F.

Because they are lightweight, these formulas absorb seamlessly into the hair fiber without leaving a heavy or greasy residue. Whether you are dealing with chemical damage, mechanical wear and tear, or simply want to boost your hair's natural shine, a dedicated hair treatment is your first line of defense.

Products for Post-Treatment Care:

ACIDIC GROW FULL SYSTEM PRODUCTS

NEW

Acidic Grow Full System Densifying Shampoo

Densifying shampoo for thin, flat hair

Select a Size for Acidic Grow Full System Densifying Shampoo 50 ml / 1.7 fl oz 300 ml / 10.1 fl oz 1 l / 33.8 fl oz

Old Price New Price $37.00

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NEW

Acidic Grow Full System Densifying Conditioner

Densifying conditioner for thin, flat hair

Select a Size for Acidic Grow Full System Densifying Conditioner 50 ml / 1.7 fl oz 300 ml / 10.1 fl oz 1 l / 33.8 fl oz

Old Price New Price $37.00

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NEW

Acidic Grow Full System Scalp & Hair Serum

Densifying scalp & hair serum for thin, flat hair

Select a Size for Acidic Grow Full System Scalp & Hair Serum 45 ml / 1.5 fl oz 100 ml / 3.4 fl oz

Old Price New Price $48.00

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NEW

Acidic Grow Full System Instant Densifying Spray

Instant densifying leave-in spray for thin, flat hair

Select a Size for Acidic Grow Full System Instant Densifying Spray 30 ml / 1 fl oz 200 ml / 6.8 fl oz

Old Price New Price $40.00

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