Could you please check these sentences, especially the use of sentence connectors? Thank you very much.

1) The lecturer is telling her students about using bamboo fabric for clothing/in the fashion industry.
Whereas cotton has long, flat fibres, bamboo fibre has a round surface which makes it soft and smooth (to the touch).
2) To her mind touching bamboo fibre is very similar to touching silk rather than cashmere, which she finds itchy to wear under the skin.
3) Bamboo compares with petrol-based synthetic fibres favourably, too. Synthetic materials are unpopular for two main reasons.
4) First, they can cause skin irritation or even a rush. Secondly, they can give off a bad smell quite quickly.
5) As a matter of fact, they fail to wick moisture away from your body. This can be a drawback not so much to the wearer but as to those around him or her.
6) In contrast, if you wear bamboo, the natural properties of the plant will help keep you naturally dry.
7) Actually, it is three, four times more absorbent than cotton. Furthermore, bamboo clothing (clothes) are strong and durable and stand up to years and years of wear. You can wash bamboo clothes 50 times without them losing their natural properties.

Choose 4 or 5 ...

2) To her mind, (comma)... itchy to wear UNDER the skin? OVER or ON

4) rush = rash

7) without THEM losing = without THEIR losing (gerund)

Sra

1) The use of sentence connectors in this sentence is correct. "Whereas" is used to introduce a contrast between cotton and bamboo fibre.

2) The use of sentence connectors in this sentence is correct. "To her mind" is used to express an opinion and "rather than" is used to compare touching bamboo fibre to touching silk instead of cashmere.

3) The use of sentence connectors in this sentence is correct. "Favourably" is used to indicate that bamboo compares well with petrol-based synthetic fibres.

4) The use of sentence connectors in this sentence is correct. "First" and "secondly" are used to organize the two main reasons why synthetic materials are unpopular.

5) The use of sentence connectors in this sentence is correct. "As a matter of fact" is used to introduce a fact, and "not so much" is used to qualify the drawback of synthetic materials.

6) The use of sentence connectors in this sentence is correct. "In contrast" is used to introduce a contrast between wearing bamboo and wearing synthetic materials.

7) The use of sentence connectors in this sentence is correct. "Actually" is used to introduce an additional point, and "furthermore" is used to add further information about the strength and durability of bamboo clothing.