Do HSR products also work against hair loss during menopause?

Generally, the average age of menopause is considered to be 50 to 51 years, although menopause can occur between 40 and 50 years in some women.
The perimenopausal period, as a transitional period, can last for months or years starting in the mid-40s from about 4 years prior to their full menopause.

Typical symptoms are:
- Hot flushes
- Night sweats
- Vaginal dryness
- Mood swings
- Weight gain
- Thinning hair
- Dry skin
- Loss of complexion in the breasts

Very characteristic is the change of hormones and in fact the imbalance between oestrogen and testosterone hormones, the female and male hormones respectively.
In fact, we need both for all situations, but we need more oestrogen than testosterone for head hair and more testosterone for body hair. This is why men, with estrogen deficiency, are more likely to lose hair on their scalp, while body hair can be very strong, unlike growth, women's hair is generally as long as their hair growth cycles (anagen) are longer due to the fact of more presence of estrogen.
During perimenopausal and menopausal times, imbalance is created and oestrogen levels decrease where testosterone levels persist. As a result, women notice hair loss on their scalp and start showing more hair on face and body.

While it is not always nice to have, it can somehow be considered normal and of course, people with severe hair loss find it devastating and become anxious, which in time can amplify the negative aspects due to the activity on the stress hormone "cortisol". Again, this hormone is functional for hair growth because it produces ATPs (energy), but an excess is again negative for normal hair growth on the scalp.

As a cosmetic company, we should not interact with people's hormonal system, which is good. Let this be for medical practices.
Because we want to keep our hair follicles in optimal condition, we have provided treatment with oestrone (a phytohormone, or plant hormone) that can provide both the necessary material to stimulate hair growth (this with the evening lotion) and products to reduce the activity of the 5 ∂-reducase enzyme that turns testosterone into dihydrotestosterone, which is more potent as a smaller component over time and could reduce hair growth by reducing oxygen uptake.
With the day lotion, we have extracts that come from milk that increase energy and in turn have a reducing ∂-reducing power.
But ... The hormonal influence is often very strong and we have to accept that we lose the battle against such strong elements on which no one can change the situation.
I remember a Russian consumer whose sister is a gynaecologist and we actually had everything to monitor the situation very well. However, we noticed that the Russian consumer lost AL her hair during pregnancy, so she started using the products. During and at the end of pregnancy and even after giving birth, she regained all her hair. Then she started breastfeeding her baby and again she lost all her hair. Because of the great results, she continued using the products the first time and it took her about a year to get most of her hair back. 
So it is as a positive that some baby hairs are visible when used.
It is best to continue using the products over a longer period of time.
Of course, I understand that this could be a budget question, as the result could most likely be rather moderate, as we cannot compete with such strong hormonal influences. On the other hand, I strongly believe that the hair follicles are better protected and the loss might be less compared to a non-treated scalp.
You can always try treating only half the scalp yourself. After about 6 weeks, you can then assess the differences. 
I think this is the best solution to keep the roots in good condition. I am sorry that we cannot offer stronger effects during this period and besides, everyone reacts a little differently to these hormonal changes somehow.

As a final recommendation, it may be good to follow a diet with plenty of oily fish (mackerel, salmon, ...) and plenty of legumes, vitamin B-6 (milk, ricotta, salmon, tuna, eggs) and zinc (red meat, shellfish, seeds, chickpeas, salad) And possibly reduce the amount of pasta or white rice in the diet.