FAQs

How long does it take to see results with Frinco Serum?

Most customers notice the first changes in 2 to 4 weeks, with full results achieved between 6 to 12 weeks of daily use.
Is this serum safe for sensitive eyes?

Yes. Serum is prostaglandin-free and specifically formulated for sensitive eyes. If irritation occurs, reduce frequency of use or contact our customer support team.
Can I use the serum with lash extensions?

Yes. Our serums are oil-free and completely safe for lash extensions. Many customers use it as an aftercare serum to strengthen their natural lashes.
Can I use the serum during pregnancy or breastfeeding?

While none of the ingredients we use are toxic, we are legally required to recommend that you consult with your physician before use.
What happens if I stop using the serum?

Your lashes will gradually return to their natural growth cycle. For best results, continue with a maintenance program.
Can I use it with mascara or makeup?

Yes. Simply allow the serum to dry completely before applying makeup.
Does Frinco help combat lash loss and thinning?

Yes. The peptide blend promotes stronger, healthier lashes and helps reduce breakage.
Is the serum safe for eyes prone to blepharitis?

While it is not a medical treatment, many customers with blepharitis report that our gentle, prostaglandin-free formula is comfortable and helps maintain healthy lashes.
How long does one tube last?

Each serum lasts approximately 8 to 12 weeks, depending on daily use.
Is Frinco vegan and cruelty-free?

Yes. All Frinco products are cruelty-free and vegan-friendly.
Does it contain prostaglandins or hormones?

No. Frinco Serum does not contain prostaglandins or hormonal ingredients.


Frequently Asked Questions about Use

When do I apply Frinco Serum?

Apply a single swipe along the upper lash line once a day on clean, dry skin.
How often should I apply the Serum?

For best results, use it once a day. Remember: consistency is key to stimulating and maintaining growth with serums.
Can I apply it to my lower lashes?

Yes, as long as you apply it sparingly to avoid spreading it too much.
Should I use it in the morning or at night?

It is always best to apply serums in the morning, if possible, as applying them at night before bed can cause eye irritation during sleep. If you prefer to apply it at night, make sure to let it dry thoroughly.
When should I stop using it if it causes irritation?

Stop use immediately, wait for the irritation to clear, and contact support for assistance.

Frequently Asked Questions about Shipping

Where do you ship to?

We ship throughout the United States, with shipment tracking included.
How long does delivery take?

All orders are processed within 24 to 48 business hours. We ship directly from our distribution centers in the United States to ensure your Frinco Serum arrives as quickly as possible. Standard delivery time is 3 to 7 business days, depending on your location. Once your order has been shipped, you will receive a tracking number to monitor the journey to your new lashes.
Do you offer international shipping?

No. Currently, we only ship within the United States.
Will my order fit in a mailbox?

Most packages fit in standard mailboxes with a 5 cm (2 inch) opening. However, in most cases, your order will be delivered to your front door.
Where are my orders shipped from?

We have logistics warehouses in different states across the United States. Depending on your location and stock availability, we select the shipping center closest to your home to reduce transit times.
Do I have tracking service?

Yes. You will receive an email with the tracking number once your order has been shipped.

Frequently Asked Questions about Shipping

What is your return policy?

Unopened items can be returned within 14 days. View our return policy here.
Do you offer a refund if I don't see results?

We currently offer a 60-day money-back guarantee on Frinco Serum orders. If you do not see results after 60 days of consistent use, we will refund the full amount. Check our policy here.
My package arrived damaged? What should I do?

To request a replacement, please email support@kcosmostore.com with a photo and your order number.

Frequently Asked Questions about Billing

What payment methods do you accept?

We accept all major cards, ShopPay, Apple Pay, Google Pay, and most debit and credit cards.

Other Frequently Asked Questions

Can I use Frinco serum with contact lenses?

Yes, once the serum has dried completely.
Can men use the serum?

Absolutely. The formula works for anyone who desires stronger lashes or brows.
Can it interfere with eye medications?

Normally no, but consult with your doctor if you are using prescription eye treatments.
Is it safe after chemotherapy?

You should consult with your doctor before starting to use any lash-enhancing product after treatment. However, we have several customers who have used the serum after chemotherapy to regrow their lashes and have seen incredible results.
How long should I wait after applying the serum before going to sleep?

Wait 5 minutes for it to be completely absorbed and dried to avoid irritation.
Can I continue using my eyelash curler?

Yes, but avoid applying excessive pressure to prevent breakage.