By Kimberly Webber

(COSMO) - From politics to diets to raising kids, it’s hard to find things we can all agree on. Here are a couple everyone is definitely on the same page about…

One: every woman wants longer, fuller eyelashes and eyebrows.

Two: GROWTH SERUMS SOMETIMES WORK. That’s right, that ambiguous statement is 100% true. A range of prices, guarantees, and promises all result in one thing: some hair growth serums working and others utterly failing.

Recently we've been looking for a bundle sets that not only work, but give you a great deal to help nourish and grow your eyelashes and brows.

Lucky for you, we ranked FIVE great lash and brow bundles that should be on your radar.

Let's get started...

Effectiveness: 95%
Safety: 90%
Price: $
Overall: A

Liaison has it all, a good value, safe ingredients, and (brace yourself) it works! Their bundle offers their famous Lash Bond, Brow Bond, and Mascara Bond. All three help condition and reactive follicles for the longest lashes and brows you've ever seen.

We tried Liaison after we found their 50% off discount code SECRET50. We gave it a six-week trial and found our journalist Stephanie Marianne’s eyelashes and brows to have a fuller, longer look. The ingredients are natural and don’t cause irritation or burning, and the instructions are straight forward and simple. The Lash Bond and Mascara Bond work in tandem to give you the best results possible, whereas the Brow Bond works all day for thicker, more luscious eyebrows.

It’s really the best of everything packed into one bundle. Effectiveness, safety, and value all rolled into one.

SAVE 50% WITH CODE SECRET50

SAVE 50% WITH CODE SECRET50

Effectiveness: 89%
Safety: 70%
Price: $$$$
Overall Value: B+

UKLASH has shown some good results with our reviewers and customers alike. Their Lash + Brow set is a good combo to start your journey, however it's about twice as expensive as Liaison's bundle which also includes the mascara. Not a great value in our opinion.

Effectiveness: 51%
Safety: 98%
Price: $$$$$
Overall Value: B-

If you were worried about price with UKLASH + UKBROW Set this one is going to blow your mind. At a whopping $212 this is the most expensive hair growth serum set we've seen. Sure, it brings results, but nothing more impressive than Liaison and some of the others on this list. If you have the money, try this one out, but if you're just starting with serums, maybe try something that's more affordable first.

Effectiveness: 33%
Safety: 90%
Price: $$$$
Overall Value: C

This is also up there in price but it at least includes a shampoo to help the appearance of thinning and balding areas on the scalp. Nulastin has been proven to bring results in 16 week trials with lasting effects. That said, Liaison offers a Hair Bond Shampoo for about a third of the price that is just as effective.

Effectiveness: 5%
Safety: 10%
Price: $
Overall: F

We were not impressed with the Lash-V Combo set. The reviews were lackluster and after a 5 week trial we saw very little results. Like we said, some serums just don't work. If you're looking for a great deal, look to the top of this list.

We wanted to talk further with our investigative reporter Stephanie Marianne on how Liaison Lash & Brow Bond 3-Step System worked for her. Stephanie tells the story.

Personally, I never believed in the effectiveness of growth serums. There’s a lot of brands out there claiming they work, but most don’t. I’ve had too many friends tricked into buying serums just to find out it’s a waste of money. So I’ve avoided it at all costs.

But then my best friend, who I trust with my life, swore by Liaison’s Lash & Brow Bond 3-Step System. She said it worked within 6 weeks. I, of course, didn’t believe her. But then she showed me her before and afters and I was stunned. Week by week, I could see her eyelashes and brows getting healthier and longer. I begged her to let me borrow her kit. Instead, she told me to use their discount code SECRET50 for 50% off!

RECEIVE 50% OFF WITH CODE SECRET50

I received the package within two days and started using it the Lash and Brow Bond. The application is very simple, a small amount across your eyelashes before you sleep. It feels like placing water on your eyelid. Of course, I woke up the next day expecting a miracle… but alas, it takes longer than that to see results. But it takes longer than one night!

Instead, I applied the Mascara Bond, which gives you darker, longer lashes while conditioning and triggering growth.

While I waited for longer lashes and brows, I looked into the science of Liaison. I wanted to know how it worked, and what it was aiming to do with my lashes…

Step 1: When you apply Liaison, a fresh supply of oxygen and citric acid work away at lash waste, releasing it through your pores to be washed away and clearing the way for nutrients.

Step 2: Our specialized mixture, including purified water and hyaluronic acid, activates internal peptides and gains access to follicles to prepare for bold growth.

Step 3: Polypeptides travel deep into your roots, supplying follicles with essential proteins throughout your day and while you sleep. Or, in the case of the mascara, it conditions as you wear it throughout the day.

Step 4: Refreshed lash follicles continue to receive the optimal oxygen, blood flow, and dose of nutrients needed to keep lashes healthy and strong.

After about 3 weeks is when I began to notice the color of my lashes getting darker. 4 weeks and I noticed significant growth. My eyebrows as well grew in thicker which helped make them darker and fuller.

Since then, I’ve continued to apply with my lashes and brows only growing thicker and healthier.