Few people have had quite an impact on hair trends like . Thanks to her time on Friends, “the Rachel” haircut continues to re-emerge as one of the most sought-after styles year after year, and the 56 year old actress has even launched her own line of haircare products.

However, there’s one secret weapon that she’s used to keep her hair looking healthy, strong and shiny over the years; . According to one , Jennifer told them: “I've got a healthy bag of vitamins that I take three times a day, like Viviscal and your basic omegas and vitamin C. All the good stuff.”

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If you’re hoping to boost your hair health this year, now is the perfect time to pick them up, as the are currently reduced in the Amazon Spring Deal Days sale. The 180 pack is usually priced at £132.99 and should last you around three months.

However it’s currently on sale with 33% off, reducing the price to £89.06 and saving you £43.93. The three month supply should be enough time to start seeing the benefits of the supplements on your hair, with recommending that you should take them twice a day for at least three to six months.

The have been scientifically formulated for women, with all the nutrients your hair needs to grow stronger and healthier. Ingredients include biotin, zinc, AminoMarC proprietary collagen complex, iron, silica, vitamin C and antioxidant-rich millet seed extract, which all contribute to the maintenance of normal, healthy hair growth.

Shoppers have also praised them, saying they “swear by” the after seeing good results. One wrote: “I’ve been taking these for nearly 4 months & my hair has definitely grown in length. Still not very thick, but it’s early days.”

Another chimed in: “Amazing product that actually WORKS!! I swear by these tablets, I used them a few years ago to grow out my short hair and within 2 months my fringe was chin length! Been using again since postpartum hair loss & this is month 4!! Sooo much new hair! My , and so thick now!! I couldn’t recommend these enough! Easy to swallow, nice and tiny! Even my husband has ordered the male ones now!! Amazing!!”

One had less impressive results, writing: “I've used the supplement for the whole dose of 3 months, and I'm not fully sure if I can in my hair. Theoretically all the right ingredients are in there but they only contribute to healthy hair growth and don't guarantee it. I'd say hair fall has decreased very slightly for my case but nothing that'll make me up the large mark up charged.”

Whilst someone else agreed: “Ordered on behalf of my sister, who has been using these for years and swears by them, even at the full retail price, as . Normally, purchase from Holland and Barrett, but the greatly reduced price on Amazon at the time of purchase for this three month supply box smashed the price of H&B, so ordering from Amazon was a no brainer. The use by date is a good twelve months away, which is also better than H&B as their use by dates on this particular product are always poor.”

For something slightly more affordable, the are also on sale at LookFantastic, down from £73.98 to £55.49 for a two month supply. For something that does it all, the from MyVitamins are also on sale, reduced to £11.99 from £20.99 for a one month supply.