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A few years ago I started to notice my ponytail felt so much thinner than usual. I’d had a stressful few years, and hair loss had become a disturbing side effect. The doctor later confirmed that the culprit was hormonal fluctuations—mine were caused by stress, but women lose their hair to everything from genetics to perimenopause. 

So I started trying every supplement I could, including collagen and turmeric. Within months, my hair started to thicken and my overall health improved.

Today for Prime Day, Amazon is running an amazing Lightning Deal (just a few hours long!) on the exact supplements I take by the Sports Research Store—up to 40 percent off. I’m snapping these up, and you should, too!

Our bodies produce collagen naturally to strengthen tendons, ligaments, and skin. Collagen also provides the amino acids necessary to build keratin, which is what hair is made up of. After a lot of research, I settled on Sports Research Store’s Collagen Peptides Powder, which has almost 50,000 positive reviews. It has the all-important hydrolyzed type I and III collagen and is all-natural and GMO-free. 

For Prime Day, a tub of Sports Research Collagen Peptides Powder is 40 percent off—so it’s $17 instead of $28.

As a bonus, Sports Research Collagen Peptides Powder does wonders for joints, too, and it’s seemed to help heal a herniated disc in my spine recently—I’m finally pain-free now. I’ve tried other collagen peptide powders—namely this one by Orgain—but only Sports Research Store’s Collagen Peptides Powder dissolves so well into my morning coffee it disappears, never clumps. And it’s totally taste- and texture-free. Today you can save $11 on the product that basically saved me. 

When I herniated my L5/S1 spinal disc, I was desperate for natural remedies. My research led me to turmeric supplements, and my pain management doctor confirmed that turmeric is an effective anti-inflammatory—great for any type of inflammation, in fact.

A friend with a similar issue told me to make sure the turmeric supplement I took contained the active component curcumin, which studies show is a powerful anti-inflammatory. I decided to stick with Sports Research Store, and now I take their Turmeric Circumin C3 Complex 500mg.

For Prime Day, Sports Research Turmeric Curcumin C3 Complex 500mg is 29 percent off—so it’s $21 instead of $30, so you save $9.

Read More from Yahoo Lifestyle:

• Genius Prime Day smart home deals that’ll make life so much easier—starting at just $10

• Breathe easy: These Prime Day deals on air purifiers are unreal—prices start at just $25!

• Oprah’s favorite comfort-shoe brand is up to 75 percent off for Prime Day

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