What is a serum, and how does it work?

A serum is a lightweight, fast-absorbing skincare product with concentrated active ingredients that target specific skin concerns like wrinkles, acne, or hydration.

How do I choose the right serum for my skin type?

For dry skin, look for hydrating serums with hyaluronic acid. For acne-prone skin, opt for serums with salicylic acid or niacinamide. Our serums are 97% pure natural ingredients, powerful vitamins, minerals and amino acids.

How important is Serum in my daily routine?

Serums are a must have in your daily skincare routine. It delivers intensive hydration and each of them can target specific skin concerns such wrinkles, couperose, pigmentation, acne, dry skin etc.

How often should I use a serum?

Most serums are safe for daily use, either once or twice a day. Some serums are only for morning use and others for night. Morning serums often focus on protection (like vitamin C), while nighttime serums work on repair (like retinol or peptides). During our beauty coach session we guide you on how to use the products correctly.

Should I apply serum before or after moisturizer?

Apply serum after cleansing and before moisturizing. Serums have smaller molecules that penetrate deeper into the skin, while moisturizers help seal in the benefits.

Can I use multiple serums at the same time?

Yes, but layer them properly. Apply water-based serums first, followed by oil-based ones. Avoid mixing strong actives like retinol and vitamin C without professional advice.

How long does it take to see results from a serum?

Results vary depending on the ingredients and skin type, but most people notice improvements within 4 to 6 weeks with consistent use due cell regeneration.

Are serums suitable for sensitive skin?

Yes, but choose gentle formulations with soothing ingredients like aloe vera or centella asiatica. Avoid strong acids or high concentrations of active ingredients.

Do I need to use sunscreen with a serum?

It is a MUST! Some serums, like those with retinol or vitamin C, can increase sun sensitivity. Always apply SPF during the day to protect your skin.

Best Serums & Skincare Treatments for Radiant Skin

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Why Choose Skincare Treatment Serums?

At Gustil, we offer high-performance serums and treatments designed to target specific skin concerns.

Whether you need deep hydration, anti-aging benefits, or brightening effects, our expertly formulated products deliver visible results.

Made with clinically proven ingredients, our serums are dermatologist-tested, cruelty-free, and suitable for all skin types.

Elevate your skincare routine with treatments that truly work!

Best Selling Serums

See what our customers love! These top-rated, award-winning serums deliver results and have earned rave reviews.

Don’t miss out – stock is limited!

iS Clinical Active Serum

Skin type: All skin types including Dry

Anti-aging | Anti-Blemish | Brightening

Indications:

Aging skin (anti-aging)
Blemish-prone skin
Hyperpigmentation (including melasma/chloasma)
Large and/or congested pores

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iS Clinical Pro-Heal Serum Advance+

Skin type: All skin types including sensitive skin

Restorative | Anti-Oxidant | Reparative

Indications:

Rosacea
Acne (including grades 3 and 4)
Contact dermatitis
Red, inflamed skin
Rough skin texture
Fine lines and wrinkles

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All Our Serums - Treat your skin Concerns

Frequenty Asked Questions About Serums

What is a serum, and how does it work?
A serum is a lightweight, fast-absorbing skincare product with concentrated active ingredients that target specific skin concerns like wrinkles, acne, or hydration.
How do I choose the right serum for my skin type?
For dry skin, look for hydrating serums with hyaluronic acid. For acne-prone skin, opt for serums with salicylic acid or niacinamide. Our serums are 97% pure natural ingredients, powerful vitamins, minerals and amino acids.
How important is Serum in my daily routine?
Serums are a must have in your daily skincare routine. It delivers intensive hydration and each of them can target specific skin concerns such wrinkles, couperose, pigmentation, acne, dry skin etc.
How often should I use a serum?
Most serums are safe for daily use, either once or twice a day. Some serums are only for morning use and others for night.
Morning serums often focus on protection (like vitamin C), while nighttime serums work on repair (like retinol or peptides).
During our beauty coach session we guide you on how to use the products correctly.
Should I apply serum before or after moisturizer?
Apply serum after cleansing and before moisturizing. Serums have smaller molecules that penetrate deeper into the skin, while moisturizers help seal in the benefits.
Can I use multiple serums at the same time?
Yes, but layer them properly. Apply water-based serums first, followed by oil-based ones. Avoid mixing strong actives like retinol and vitamin C without professional advice.
How long does it take to see results from a serum?
Results vary depending on the ingredients and skin type, but most people notice improvements within 4 to 6 weeks with consistent use due cell regeneration.
Are serums suitable for sensitive skin?
Yes, but choose gentle formulations with soothing ingredients like aloe vera or centella asiatica. Avoid strong acids or high concentrations of active ingredients.
Do I need to use sunscreen with a serum?
It is a MUST! Some serums, like those with retinol or vitamin C, can increase sun sensitivity. Always apply SPF during the day to protect your skin.